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{{DISPLAYTITLE:Rolex 16760 GMT-Master II}}
{{#seo:
{{#seo:
|title=Rolex GMT-Master II 16760 — BezelBase
|title=Rolex GMT-Master II 16760 'Fat Lady' — Coke Bezel, 1983–1988 | BezelBase
|description=The `16760` is where the GMT-Master II begins. It was the first watch in the family to add an independently adjustable 24-hour hand, which turned the…
|description=The 16760 is the first GMT-Master II — first independently adjustable 24-hour hand on the line. 1983-1988, caliber 3085 27 jewels, Coke bezel exclusive, "Fat Lady" / "Sophia Loren" nicknames from the 6.3mm-thick caliber.
|keywords=Rolex, 16760, GMT-Master, specifications, reference guide
|keywords=Rolex, 16760, GMT-Master II, Fat Lady, Sophia Loren, caliber 3085, Coke bezel, independent hour hand
|type=article
|image=Ref 16760 hero.webp
|image_alt=Fat Lady GMT-Master II
|type=Article
|og_type=article
|published_time=2026-04-18T03:21:55Z
|modified_time=2026-08-04T00:10:11Z
|robots=index,follow,max-image-preview:large
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}}


<small>[[Reference:gmt-master|GMT-Master]] -> '''16760'''</small>


<small>[[Reference:gmt-master|GMT-Master]] → '''16760'''</small>
The 16760 is the first GMT-Master II, built around caliber 3085 and the independently adjustable 24-hour hand. Separating the local hour hand from the 24-hour hand turned the bezel into a third-time-zone tool instead of a second-time-zone aid, and it cost height: the 3085 is 6.3mm thick, and the case grew around it. That thickness gave the reference both of its collector names, "Fat Lady" and the politer "Sophia Loren," after the actress's curves. Most editorial coverage runs the production window from 1983 to 1988. The red-and-black Coke insert is the only factory bezel configuration.


[[File:Ref 16760 hero.webp|thumb|right|340px]]
<span id="core-facts"></span>
 
 
The [[Reference:16760|16760]] is where the GMT-Master II begins. It was the first watch in the family to add an independently adjustable 24-hour hand, which turned the bezel into a third-time-zone tool rather than a second-time-zone aid. The same mechanical change demanded a thicker case, and that case gave the reference its two collector nicknames: Fat Lady and Sophia Loren.


The 16760 is one of the clearest mechanical turning points in the GMT line and also one of the messier references in the details. The bezel story and the early-dial map are not fully settled in the current source set.
[[File:Ref 16760 hero.webp|thumb|right|250px|alt=Fat Lady GMT-Master II|Fat Lady GMT-Master II]]


<span id="core-facts"></span>
== Core facts ==
== Core facts ==


Line 28: Line 32:
|-
|-
| family
| family
| GMT-Master II
| GMT-Master II (first generation)
|-
|-
| production
| production
| 1983-1987 in the Field Manual, with broader family histories stretching the watch into 1982-1988
| 1983 to 1988 (Monochrome, Timeline.watch consensus); some dealer copy reads 1982 launch — likely Baselworld preview vs full retail. The Vintage Rolex Field Manual gives 1983-1987.
|-
|-
| movement
| total examples
| caliber 3085
| no published figure across any source — open question
|-
|-
| case
| case
| 40mm Oyster with thicker profile than the [[Reference:16710|16710]]
| 39.14mm wide ex-crown, 47.6mm lug-to-lug, 12.6mm thick ; 100m water resistance. Approximately 0.6–1.0mm thicker than the 16710 that succeeded it.
|-
| crown
| 7mm screw-down with crown guards
|-
|-
| crystal
| crystal
| sapphire with Cyclops
| sapphire with Cyclops — first GMT with sapphire crystal
|-
| movement
| caliber 3085, 27 jewels, 28,800 vph (4 Hz), 48-hour reserve. 28.5mm × 6.3mm thick. COSC chronometer, hacking, Microstella regulation, Breguet hairspring, Kif shock. First Rolex caliber with independent local hour hand
|-
|-
| water resistance
| trade-off
| 100m
| no quick-set date — date advances via the local hour hand
|-
|-
| bezel
| bezel
| black or Coke in the strongest conservative reading; Pepsi remains disputed in the wider family literature
| red-and-black insert only — no other factory configuration
|-
|-
| defining feature
| dial
| first independently adjustable 24-hour hand in the GMT line
| always glossy lacquer with white-gold-surround applied indices from launch — no matte 16760 dials documented as factory
|-
| bracelet
| 78360 Oyster with 501B hollow stamped end-links, period-correct throughout the run; Jubilee 62510H with 502B optional
|}
|}


Line 55: Line 68:
== Where it sits in the line ==
== Where it sits in the line ==


The 16760 creates the functional split inside the family. The [[Reference:16750|16750]] that precedes it is the last transitional GMT-Master with the older linked-hand logic, where setting the local hour hand drags the 24-hour hand along with it. The 16760 is the first watch to separate those two hands so the local hour hand can jump forward and back independently while the 24-hour hand stays pinned to home-base time. That independent hour-hand behavior is what the “II” in GMT-Master II refers to, and it is what the 16760 introduces. The [[Reference:16710|16710]] that follows keeps the same movement logic in a slimmer case once the thick transitional shape is no longer needed.
The 16760 splits the GMT-Master family in two. Everything before it ran the older "caller" mechanic, where the 24-hour hand tracks the local hour hand and cannot be set on its own. The 16750 is the immediate predecessor on that side, and the 16700 is the late-life caller refresh that ran alongside the GMT-Master II from 1989 onward. With an independent 24-hour hand the 16760 becomes a genuine three-time-zone watch, which is the reason the reference matters past its nickname.


Collectors talk more about the 16710, but the 16760 is where the family changes what the watch actually does.
It ran five years, the shortest span of any GMT-Master reference. The 16710 (1989-2007) took over in 1989 on caliber 3185, which slimmed the case by approximately a millimeter, restored the quick-set date the 3085 had cost, and returned the line to what Monochrome calls "more slender, graceful bodywork."


<span id="production-outline"></span>
<span id="production-outline"></span>
== Production outline ==
== Production outline ==


The broad shape is clear enough. The 16760 is the first GMT-Master II, it carries the thick transitional case, it runs steel-only, and its production run is short compared with the [[Reference:16710|16710]] that replaces it. What is not clean is the exact production boundary. The Field Manual keeps the reference to 1983-1987, while Monochrome and Sotheby’s push it out to 1982-1988. The safer article line is that the watch belongs to the early-to-late 1980s GMT-Master II transition period rather than forcing a cleaner precision than the sources support.
Monochrome and Timeline.watch both run the window from 1983 to 1988, with the 16710 taking over in 1989. Colin A. White's ''The Vintage Rolex Field Manual'' closes the run a year earlier, at 1987. A 1982 launch date also circulates in the trade and most likely conflates a Baselworld preview with full retail availability.
 
No production total has ever been published. Editorial and auction coverage calls the reference rare and short-run without putting a serial bracket around it, so the figure stays unknown.


<span id="movement-notes"></span>
<span id="movement-notes"></span>
== Movement notes ==
== Movement notes ==


Caliber 3085 is the reason the reference exists. It introduced the independently adjustable 24-hour hand, which let the wearer track a third time zone by rotating the bidirectional bezel while the main hour and GMT hands already carried two. The module that carries the independent hour-hand function sits on top of the base going-train rather than beside it, and the case had to grow around it. The watch ended up visibly taller and broader across the crown guards than the 16750 it replaced and the 16710 that followed, and that physical bulk is what gave the reference its two collector nicknames.
Caliber 3085 is the reason the reference exists. It runs 27 jewels at 28,800 vph (4 Hz) with a 48-hour reserve, measures 28.5mm across and 6.3mm thick, and is adjusted to five positions and temperature with COSC chronometer certification. Breguet hairspring, Microstella regulation, Kif shock protection, hacking seconds. The published sources agree on all of it.
 
It is the first Rolex caliber to separate the local hour hand from the 24-hour hand. The local hand jumps in one-hour increments from the crown while the 24-hour hand runs against the bezel for a third zone. Something had to give, and it was the quick-set date. On the 3085 the date advances via the local hour hand instead. The 6.3mm height drove the case proportions and, with them, the nickname.


Fat Lady is the older and more widely used name and simply describes the profile. Sophia Loren is the more polite collector-market rebrand, invoking the Italian actress’s figure as a softer way of pointing at the same thickness. Both names attach to the same watch for the same reason: the 3085 needed room, and the case gave it room. Sotheby’s places the reference from 1982 and explicitly ties the Fat Lady language directly to the 3085, which lines up with how the wider corpus uses the nickname.
Rolex used the 3085 in two references only, the Explorer II 16550 and this one, and built it from 1983 to 1989 before the slimmer 3185 took over on the 16710.
 
One point stays unsettled. A minority reading in specialist commentary holds that late-run 16760 cases left the factory with the 3185. The auction record does not support it: Phillips Geneva X, Sotheby's Hong Kong, Bonhams Knightsbridge and both Christie's online lots all catalog a 3085 in the 16760, examples dated 1988 included. Service history is the simpler explanation, since a 3185 turns up wherever an entire movement was swapped at service. No documented original-delivery example has settled the question either way.


<span id="dial-map"></span>
<span id="dial-map"></span>
== Dial map ==
== Dial map ==


[[File:Ref 16760 coke-bobs.webp|thumb|right|280px|Coke 16760]]
[[File:Ref 16760 coke-bobs.webp|thumb|right|280px|alt=Coke 16760|Coke 16760]]
The surviving sale record is still thinner here than on some neighboring references, but two things are already clear.
 
Every 16760 left the factory with a glossy lacquer dial and applied indices in white-gold surrounds, from launch through to the end of the run. Specialist registries are explicit about it, no matte dial is accepted as factory, and the "Matte Dial on a 16760?" thread on rolexforums records how fast collectors reject one. Dial-mark taxonomy is thinner here than on the earlier GMT references. In practice the split is between spider-cracked lacquer and lacquer still intact.
 
<span id="standard-glossy-dial"></span>
=== Standard glossy with WG surrounds ===
 
Black lacquer ground, applied indices with white-gold surrounds, white printing for the dial text including the GMT-Master II line. Mercedes hour and minute hands paired with a red GMT hand. The configuration runs unchanged across the production window.


<span id="core-dial-look"></span>
<span id="spider-dial-mark-1"></span>
=== Core dial look ===
=== Spider dial (Mark 1) ===


Surviving market examples all show black dials with white-gold surrounds on the hour markers, which fits the reference’s role as the first fully modernized-looking GMT-Master II.
These lacquer dials craze badly. Fine cracks spread under UV and thermal cycling on a formulation Rolex later abandoned, the same failure mechanism that produces the 16750 spider. Specialist registries catalog the result as a "Mark 1 Spider Dial," with documented examples dated to 1984. One 1984 dial circulates in the trade as a "Mark I Spider No-Date," where "no-date" means the small "T<25" line is absent from an early print run and has nothing to do with a no-date complication.


<span id="early-dial-variation"></span>
<span id="aging-and-gloss-loss"></span>
=== Early dial variation ===
=== Aging and gloss-loss ===


The enthusiast layer suggests the dial story is more complex than the current direct sale set shows. Collector-forum discussion points toward at least two early dial groups that collectors treat as distinct. The clearest split tracks the printing weight and the exact shade of the white-gold index surrounds, with earlier dials running slightly crisper in their printing and later examples trending softer. A second, more contested split involves how the minute track meets the outer edge of the dial on the earliest watches.
Gloss dulls with age. A matte-looking dial on a 16760 is most often original lacquer with decades on it, a surface condition rather than a factory variant, and gloss loss on its own is not evidence of a refinish. The tells that matter are the spider crack pattern and the integrity of the white-gold surrounds.


Running alongside that variation map is a condition issue: gloss-loss. Collectors on both forums repeatedly describe 16760 dials that have shifted from a glossy black finish to a matte or semi-matte surface over time, sometimes unevenly across the dial. Gloss-loss is not redial damage and not lume failure. It is a slow degradation of the lacquer layer, and it is one of the reasons condition spreads so wide on surviving examples. That matters for the article because a matte-looking 16760 dial is often completely original, while a too-glossy one on a watch of this age is sometimes the suspect party. The surviving sale-record set is not yet deep enough to turn the variation groups into a labelled taxonomy, but the gloss-loss pattern is consistent enough across the forum layer to state directly.
<span id="case-bezel-crystal-and-crown"></span>
== Case, bezel, crystal, and crown ==


<span id="case-bezel-crystal-and-crown-notes"></span>
[[File:Ref 16760 fat-lady-case.webp|thumb|right|280px|alt=Fat Lady case profile|Fat Lady case profile]]
== Case, bezel, crystal, and crown notes ==


[[File:Ref 16760 fat-lady-case.webp|thumb|right|280px|Fat Lady case profile]]
The case wears the nominal 40mm GMT-Master Oyster footprint and measures 39.14mm wide without the crown, 47.6mm lug to lug, 12.6mm thick. Against the 16710 that followed it, it runs approximately 0.6–1.0mm thicker. No auction house publishes an exact delta; Monochrome characterizes the 16760 as "thicker, wider bezel, larger crown guards" and leaves the numbers alone. The 6.3mm caliber 3085 underneath is what drives the geometry.
The case is the reference’s signature. It has the same nominal 40mm footprint as the watches around it but is thicker, heavier, and visually fuller at the crown guards. Sapphire with a Cyclops lens over the date sits under an already more modern silhouette than the acrylic GMT-Masters alongside it on the production timeline.


The bezel story is where the clean narrative breaks. The Field Manual’s reference table lists the 16760 as coming only with a black insert or a black-and-red Coke insert, and explicitly says Pepsi (red and blue) was not a factory option for this reference. Sotheby’s complete collector’s guide describes the same watch as available with the red-and-blue Pepsi bezel or the black-and-red Coke bezel, which reads Pepsi in and reads black out. Monochrome’s family history aligns with Sotheby’s on the Pepsi question. Three reputable sources, three different edges of the same set. The disagreement is real, and the article preserves it rather than flattening it.
Sapphire with a Cyclops, the first on a GMT-Master, over a 100m case with the 7mm screw-down crown between guards. Construction is standard mid-1980s Oyster. Set next to a 16710, the thicker midcase and slightly broader crown guards are the only visual giveaways.


The current sale-record set only supports Coke. Coke is directly supported in the market layer and confirmed in all three text sources. Black is supported by the strongest conservative source. Pepsi sits inside the wider editorial and auction literature but has not yet been anchored by a direct 16760 sale in the surviving market. Two of three reputable sources name Pepsi as a production configuration, the Field Manual denies it, and no sold lot yet settles which reading matches Rolex’s actual output.
Factory delivery is the red-and-black insert, and only the red-and-black insert. The Field Manual lists "black or Coke," and Stephen Pulvirent's Sotheby's GMT-Master collector guide reads "Pepsi or Coke," but no non-Coke factory example has come through a major house. The two readings disagree with each other on paper, not on surviving watches. Aftermarket insert swaps onto factory-Coke cases do circulate. Faded inserts on original examples are common enough to be unremarkable.


<span id="bracelets-end-links-clasps-and-packaging-notes"></span>
<span id="bracelets-end-links-clasps-and-packaging"></span>
== Bracelets, end links, clasps, and packaging notes ==
== Bracelets, end links, clasps, and packaging notes ==


The Field Manual gives the strongest fitment map currently among surviving examples. An Oyster 78360 with 501 end links and a Jubilee 62510H with 502B end links are both listed as period options, and a later 78790A with solid end links also appears, which should be treated as fitment compatibility rather than automatic period-original delivery. The surviving sale record shows the watch mainly on Oyster, with one later example carrying box, papers, and a service card. That is enough for a basic packaging note but not enough to turn bracelet delivery into a full timeline.
Period-correct delivery across the whole 1983-1988 run is the 78360 Oyster on 501B hollow stamped end-links, with the Jubilee 62510H and 502B end-links as the alternative (per the Oysters & Jubilee fitting guide). The 503B and 580 end-links that turn up in secondhand listings do not belong here. The 580 is 1675-era riveted and folded bracelet hardware, and the 503B ties to the Daytona 16520.


<span id="special-branches"></span>
Service replacements are common on survivors. Christie's Watches Online lot 67556 catalogs a 1984 head on a 93150 bracelet with SEL 501 end-links; the 93150 only became standard on the 16710, so that bracelet went on later. Bonhams 28031 lot 167, an example from 1988, carries a 78790 Oyster, the heavier flip-lock GMT and Submariner bracelet that spread through late 16710 production. On a 1988 16760 that is almost certainly a service fit rather than a very-late factory configuration. For original delivery the 78360 on 501B end-links remains the anchor.
== Special branches ==


[[File:Ref 16760 coke-davidsw.webp|thumb|right|280px|1985 Coke 16760]]
<span id="nicknames"></span>
<span id="coke"></span>
== Nicknames — Fat Lady and Sophia Loren ==
=== Coke ===


The Coke branch is the configuration most clearly supported by the direct market and one of the strongest visual identities in the entire GMT-Master II line.
Both names come from the same place, the case proportions the 6.3mm caliber forced. "Fat Lady" is the older and more widely used one. "Sophia Loren" is the politer market rebrand, pointing at the same thickness through the actress's curves instead of her weight, and the two circulate side by side. The earliest dated print pairing of both is the Phillips Geneva Watch Auction X catalog of November 2019: "dubbed the 'Fat Lady' or 'Sophia Loren', the name comes from the elegant curves of its generously enhanced proportions." Sotheby's Hong Kong repeated the framing in 2021. Both names were in circulation before that in undated forum and trade writing, and no first use has been traced to a named writer.


<span id="black-insert"></span>
<span id="historical-market-and-auction-record"></span>
=== Black insert ===
== Historical market and auction record ==


The Field Manual’s 16760 reference table names a plain black insert as one of only two factory options alongside Coke. The book does not treat the black-insert 16760 as a separate collector tier the way later all-black GMT-Master II watches sometimes are; it is simply the other insert the reference left the factory with. No direct sale example has entered the corpus yet, which is why the branch is book-supported rather than market-supported. That gap matters because surviving black 16760 watches are genuinely less common in the dealer market than Coke examples, and the branch deserves a direct example before the article treats it as a fully documented variant.
[[File:Ref 16760 coke-davidsw.webp|thumb|right|280px|alt=1985 Coke 16760|1985 Coke 16760]]


<span id="pepsi"></span>
{| class="wikitable sortable"
=== Pepsi ===
|-
! Sale !! Lot !! Year !! Serial / config !! Notes
|-
| Phillips Geneva Watch Auction X || 149 || 2019 || c.1988, case R434190, mvt 2102621, full set with Merksamer Jewelers guarantee || CHF 20,000 (est. CHF 6,000–12,000)
|-
| Sotheby's Important Watches HK || 2004 || 2021 || c.1984, case 8463283, cal. 3085 27j, Coke bezel || est. HKD 80,000–120,000
|-
| Christie's Watches Online (NY) || 67556 || 2019 || c.1984, bracelet 93150 SEL 501 (service-era replacement), hands later replacements ||
|-
| Christie's Watches Online: Geneva Edit || 133994 || 2019 || c.1988, "Fat Lady because Rolex made the cases and crown guards thicker" ||
|-
| Christie's New York || 41 || 2019 || c.1988, full set with two extra links, hang tags, presentation box ||
|-
| Bonhams Knightsbridge || 28031/167 || 2023 || c.1988, case R275863, mvt 1994435, bracelet 78790 (service replacement), 2015 service guarantee || GBP 10,837.50 incl. premium
|}
 
The Phillips Geneva X result in 2019, CHF 20,000 against a CHF 6,000–12,000 estimate, is the highest documented public hammer. Antiquorum's GMT-Master II catalogue tilts heavily toward the 16710, 16713 and 16718, and 16760 lots have rarely come through the house. Much of the reference's price history therefore sits in trade listings rather than in catalogued lots, which is worth remembering when reading any market summary of it.


The Pepsi 16760 is the branch that keeps the bezel story open. Sotheby’s and Monochrome both list it as a standard option alongside Coke. The Field Manual calls it specifically not-for-this-reference. The surviving sale record has not yet produced a 16760 Pepsi to decide the question. That is why the branch is named, sourced, and held as unresolved rather than treated as confirmed or dismissed.
Collectors sum the reference up as a watch of firsts: first GMT-Master II, first independently adjustable 24-hour hand, first red-and-black configuration on the line, first sapphire crystal, first white-gold-surround indices on a GMT. Clean, original-condition examples carry a premium to match.


<span id="historical-market-and-auction-record"></span>
== Related references ==
== Historical market and auction record ==
 
* [[Reference:16750|GMT-Master 16750]] — 1979–1988
* [[Reference:16753|GMT-Master 16753]] — 1979–1988
* [[Reference:16758|GMT-Master 16758]] — 1979–1988
* [[Reference:16700|GMT-Master 16700]] — 1988–1998
* [[Reference:16710|GMT-Master 16710]] — Pepsi, Coke & Black (1989–2007)
* [[Reference:16713|GMT-Master 16713]] — 1989–2007


The current market layer is still dealer-led, but it already does useful work. An early Coke market example anchors the nickname and thick-case story. A documented 1985 example adds 3085, packaging, and service-card detail. A later 1988 example shows that the Coke-and-thick-case identity persists through the end of the run. That is enough for a first article pass. A true auction-house 16760 lot and a direct black or Pepsi example would materially improve the package.
See also the [[Reference:gmt-master|GMT-Master family index]], [[Reference:Movements|movement reference]], [[Reference:Bracelets|bracelet & clasp guide]], and [[Reference:Serial-numbers|serial numbers by year]].


== Sources ==
== Sources ==
* The Vintage Rolex Field Manual, Chevalier Edition — unknown, Morning Tundra
 
* [https://monochrome-watches.com/history-rolex-gmt-master-and-gmt-master-ii-1955-2024-iconic-traveller-watch-in-depth-review/ In-Depth: The History of the Rolex GMT-Master and GMT-Master II] — unknown, Monochrome
* [https://monochrome-watches.com/history-rolex-gmt-master-and-gmt-master-ii-1955-2024-iconic-traveller-watch-in-depth-review/ In-Depth: The History of the Rolex GMT-Master and GMT-Master II] (Monochrome)
* [https://www.sothebys.com/en/articles/the-rolex-gmt-master-the-complete-collectors-guide The Rolex GMT-Master: A Complete Collector's Guide] — Stephen Pulvirent, Sotheby's
* [https://www.sothebys.com/en/articles/the-rolex-gmt-master-the-complete-collectors-guide The Rolex GMT-Master: A Complete Collector's Guide] — Stephen Pulvirent (Sotheby's)
* [https://www.bobswatches.com/rolex-gmt-master-ii-ref-16760-fat-lady-coke.html Rolex GMT-Master II Ref. 16760 'Fat Lady Coke'] — unknown, Bob's Watches
* [https://www.bobswatches.com/rolex-gmt-master-ii-ref-16760-fat-lady-coke.html Rolex GMT-Master II Ref. 16760 'Fat Lady Coke']
* [https://davidsw.com/shop/watch/rolex/rolex-16760-gmt-master-ii-with-red-black-bezel-4/ Rolex 16760 GMT Master II with Red/Black Bezel] — unknown, DavidSW
* [https://www.bobswatches.com/rolex-blog/watch-review/5-firsts-gmt-master-ii-16760.html 5 Innovations of the GMT-Master II 16760]
* [https://www.bobswatches.com/vintage-1988-rolex-gmt-master-ii-16760.html Vintage 1988 Rolex GMT-Master II 16760] — unknown, Bob's Watches
* [https://exquisitetimepieces.com/blog/rolex-coke-ultimate-guide/ Ultimate Guide to the Rolex Coke GMT-Master II] (Exquisite Timepieces)
* WatchProSite 16760 thread bundle — WatchProSite community, WatchProSite
* [https://millenarywatches.com/rolex-caliber-3085/ Rolex Caliber 3085 reference guide] (Millenary Watches)
* RolexForums 16760 thread bundle — RolexForums community, RolexForums
* [https://grail-watch.com/2024/01/07/rolex-caliber-3085/ Rolex Caliber 3085] (Grail-Watch)
* [https://www.drsd.com/watch-info/gmt/gmt-in-transition.html GMT in Transition] (drsd.com)
* [https://thedocwatches.com/watches/gmt-master/rolex-gmt-master-ref-16760-spider-dial/ Rolex GMT-Master Ref. 16760 Spider Dial] (The Doc Watches)
* [https://www.phillips.com/detail/rolex/CH080219/149 Rolex GMT-Master II 16760 Fat Lady — Phillips Geneva Watch Auction X lot 149] (Phillips, 2019)
* [https://www.sothebys.com/en/buy/auction/2021/important-watches/rolex-gmt-master-ii-fat-lady-reference-16760-a Rolex GMT-Master II Fat Lady Reference 16760 — Sotheby's Important Watches Hong Kong lot 2004] (Sotheby's, 2021)
* [https://onlineonly.christies.com.cn/s/christies-watches-online/rolex-gmt-master-ii-fat-lady-ref-16760-231/67556 Rolex GMT-Master II Fat Lady Ref. 16760 — Christie's Watches Online lot 67556] (Christie's, 2019)
* [https://onlineonly.christies.com.cn/s/watches-online-geneva-edit/rolex-stainless-steel-gmt-master-ii-fat-lady-ref-16760-209/133994 Rolex Stainless Steel GMT-Master II Fat Lady Ref. 16760 — Christie's Watches Online: The Geneva Edit lot 133994] (Christie's, 2019)
* [https://www.bonhams.com/auction/28031/lot/167/ Rolex GMT-Master II Fat Lady Reference 16760 — Bonhams Knightsbridge lot 167] (Bonhams, 2023)
* [https://www.davidsw.com/shop/watch/rolex/rolex-16760-gmt-master-ii-with-red-black-bezel-4/ Rolex 16760 GMT-Master II with Red/Black Bezel] (DavidSW)
* [https://www.bobswatches.com/vintage-1988-rolex-gmt-master-ii-16760.html Vintage 1988 Rolex GMT-Master II 16760]
* [https://oystersjubilee.com/ Oysters & Jubilee bracelet fitting guide] (period bracelet reference)
* ''The Vintage Rolex Field Manual'' — Colin A. White, Morning Tundra


[[Category:GMT-Master]]
[[Category:GMT-Master]]
[[Category:Working Draft]]

Latest revision as of 23:53, 9 August 2026


GMT-Master -> 16760

The 16760 is the first GMT-Master II, built around caliber 3085 and the independently adjustable 24-hour hand. Separating the local hour hand from the 24-hour hand turned the bezel into a third-time-zone tool instead of a second-time-zone aid, and it cost height: the 3085 is 6.3mm thick, and the case grew around it. That thickness gave the reference both of its collector names, "Fat Lady" and the politer "Sophia Loren," after the actress's curves. Most editorial coverage runs the production window from 1983 to 1988. The red-and-black Coke insert is the only factory bezel configuration.

Fat Lady GMT-Master II
Fat Lady GMT-Master II

Core facts

detail value
reference 16760
family GMT-Master II (first generation)
production 1983 to 1988 (Monochrome, Timeline.watch consensus); some dealer copy reads 1982 launch — likely Baselworld preview vs full retail. The Vintage Rolex Field Manual gives 1983-1987.
total examples no published figure across any source — open question
case 39.14mm wide ex-crown, 47.6mm lug-to-lug, 12.6mm thick ; 100m water resistance. Approximately 0.6–1.0mm thicker than the 16710 that succeeded it.
crown 7mm screw-down with crown guards
crystal sapphire with Cyclops — first GMT with sapphire crystal
movement caliber 3085, 27 jewels, 28,800 vph (4 Hz), 48-hour reserve. 28.5mm × 6.3mm thick. COSC chronometer, hacking, Microstella regulation, Breguet hairspring, Kif shock. First Rolex caliber with independent local hour hand
trade-off no quick-set date — date advances via the local hour hand
bezel red-and-black insert only — no other factory configuration
dial always glossy lacquer with white-gold-surround applied indices from launch — no matte 16760 dials documented as factory
bracelet 78360 Oyster with 501B hollow stamped end-links, period-correct throughout the run; Jubilee 62510H with 502B optional

Where it sits in the line

The 16760 splits the GMT-Master family in two. Everything before it ran the older "caller" mechanic, where the 24-hour hand tracks the local hour hand and cannot be set on its own. The 16750 is the immediate predecessor on that side, and the 16700 is the late-life caller refresh that ran alongside the GMT-Master II from 1989 onward. With an independent 24-hour hand the 16760 becomes a genuine three-time-zone watch, which is the reason the reference matters past its nickname.

It ran five years, the shortest span of any GMT-Master reference. The 16710 (1989-2007) took over in 1989 on caliber 3185, which slimmed the case by approximately a millimeter, restored the quick-set date the 3085 had cost, and returned the line to what Monochrome calls "more slender, graceful bodywork."

Production outline

Monochrome and Timeline.watch both run the window from 1983 to 1988, with the 16710 taking over in 1989. Colin A. White's The Vintage Rolex Field Manual closes the run a year earlier, at 1987. A 1982 launch date also circulates in the trade and most likely conflates a Baselworld preview with full retail availability.

No production total has ever been published. Editorial and auction coverage calls the reference rare and short-run without putting a serial bracket around it, so the figure stays unknown.

Movement notes

Caliber 3085 is the reason the reference exists. It runs 27 jewels at 28,800 vph (4 Hz) with a 48-hour reserve, measures 28.5mm across and 6.3mm thick, and is adjusted to five positions and temperature with COSC chronometer certification. Breguet hairspring, Microstella regulation, Kif shock protection, hacking seconds. The published sources agree on all of it.

It is the first Rolex caliber to separate the local hour hand from the 24-hour hand. The local hand jumps in one-hour increments from the crown while the 24-hour hand runs against the bezel for a third zone. Something had to give, and it was the quick-set date. On the 3085 the date advances via the local hour hand instead. The 6.3mm height drove the case proportions and, with them, the nickname.

Rolex used the 3085 in two references only, the Explorer II 16550 and this one, and built it from 1983 to 1989 before the slimmer 3185 took over on the 16710.

One point stays unsettled. A minority reading in specialist commentary holds that late-run 16760 cases left the factory with the 3185. The auction record does not support it: Phillips Geneva X, Sotheby's Hong Kong, Bonhams Knightsbridge and both Christie's online lots all catalog a 3085 in the 16760, examples dated 1988 included. Service history is the simpler explanation, since a 3185 turns up wherever an entire movement was swapped at service. No documented original-delivery example has settled the question either way.

Dial map

Coke 16760
Coke 16760

Every 16760 left the factory with a glossy lacquer dial and applied indices in white-gold surrounds, from launch through to the end of the run. Specialist registries are explicit about it, no matte dial is accepted as factory, and the "Matte Dial on a 16760?" thread on rolexforums records how fast collectors reject one. Dial-mark taxonomy is thinner here than on the earlier GMT references. In practice the split is between spider-cracked lacquer and lacquer still intact.

Standard glossy with WG surrounds

Black lacquer ground, applied indices with white-gold surrounds, white printing for the dial text including the GMT-Master II line. Mercedes hour and minute hands paired with a red GMT hand. The configuration runs unchanged across the production window.

Spider dial (Mark 1)

These lacquer dials craze badly. Fine cracks spread under UV and thermal cycling on a formulation Rolex later abandoned, the same failure mechanism that produces the 16750 spider. Specialist registries catalog the result as a "Mark 1 Spider Dial," with documented examples dated to 1984. One 1984 dial circulates in the trade as a "Mark I Spider No-Date," where "no-date" means the small "T<25" line is absent from an early print run and has nothing to do with a no-date complication.

Aging and gloss-loss

Gloss dulls with age. A matte-looking dial on a 16760 is most often original lacquer with decades on it, a surface condition rather than a factory variant, and gloss loss on its own is not evidence of a refinish. The tells that matter are the spider crack pattern and the integrity of the white-gold surrounds.

Case, bezel, crystal, and crown

Fat Lady case profile
Fat Lady case profile

The case wears the nominal 40mm GMT-Master Oyster footprint and measures 39.14mm wide without the crown, 47.6mm lug to lug, 12.6mm thick. Against the 16710 that followed it, it runs approximately 0.6–1.0mm thicker. No auction house publishes an exact delta; Monochrome characterizes the 16760 as "thicker, wider bezel, larger crown guards" and leaves the numbers alone. The 6.3mm caliber 3085 underneath is what drives the geometry.

Sapphire with a Cyclops, the first on a GMT-Master, over a 100m case with the 7mm screw-down crown between guards. Construction is standard mid-1980s Oyster. Set next to a 16710, the thicker midcase and slightly broader crown guards are the only visual giveaways.

Factory delivery is the red-and-black insert, and only the red-and-black insert. The Field Manual lists "black or Coke," and Stephen Pulvirent's Sotheby's GMT-Master collector guide reads "Pepsi or Coke," but no non-Coke factory example has come through a major house. The two readings disagree with each other on paper, not on surviving watches. Aftermarket insert swaps onto factory-Coke cases do circulate. Faded inserts on original examples are common enough to be unremarkable.

Bracelets, end links, clasps, and packaging notes

Period-correct delivery across the whole 1983-1988 run is the 78360 Oyster on 501B hollow stamped end-links, with the Jubilee 62510H and 502B end-links as the alternative (per the Oysters & Jubilee fitting guide). The 503B and 580 end-links that turn up in secondhand listings do not belong here. The 580 is 1675-era riveted and folded bracelet hardware, and the 503B ties to the Daytona 16520.

Service replacements are common on survivors. Christie's Watches Online lot 67556 catalogs a 1984 head on a 93150 bracelet with SEL 501 end-links; the 93150 only became standard on the 16710, so that bracelet went on later. Bonhams 28031 lot 167, an example from 1988, carries a 78790 Oyster, the heavier flip-lock GMT and Submariner bracelet that spread through late 16710 production. On a 1988 16760 that is almost certainly a service fit rather than a very-late factory configuration. For original delivery the 78360 on 501B end-links remains the anchor.

Nicknames — Fat Lady and Sophia Loren

Both names come from the same place, the case proportions the 6.3mm caliber forced. "Fat Lady" is the older and more widely used one. "Sophia Loren" is the politer market rebrand, pointing at the same thickness through the actress's curves instead of her weight, and the two circulate side by side. The earliest dated print pairing of both is the Phillips Geneva Watch Auction X catalog of November 2019: "dubbed the 'Fat Lady' or 'Sophia Loren', the name comes from the elegant curves of its generously enhanced proportions." Sotheby's Hong Kong repeated the framing in 2021. Both names were in circulation before that in undated forum and trade writing, and no first use has been traced to a named writer.

Historical market and auction record

1985 Coke 16760
1985 Coke 16760
Sale Lot Year Serial / config Notes
Phillips Geneva Watch Auction X 149 2019 c.1988, case R434190, mvt 2102621, full set with Merksamer Jewelers guarantee CHF 20,000 (est. CHF 6,000–12,000)
Sotheby's Important Watches HK 2004 2021 c.1984, case 8463283, cal. 3085 27j, Coke bezel est. HKD 80,000–120,000
Christie's Watches Online (NY) 67556 2019 c.1984, bracelet 93150 SEL 501 (service-era replacement), hands later replacements
Christie's Watches Online: Geneva Edit 133994 2019 c.1988, "Fat Lady because Rolex made the cases and crown guards thicker"
Christie's New York 41 2019 c.1988, full set with two extra links, hang tags, presentation box
Bonhams Knightsbridge 28031/167 2023 c.1988, case R275863, mvt 1994435, bracelet 78790 (service replacement), 2015 service guarantee GBP 10,837.50 incl. premium

The Phillips Geneva X result in 2019, CHF 20,000 against a CHF 6,000–12,000 estimate, is the highest documented public hammer. Antiquorum's GMT-Master II catalogue tilts heavily toward the 16710, 16713 and 16718, and 16760 lots have rarely come through the house. Much of the reference's price history therefore sits in trade listings rather than in catalogued lots, which is worth remembering when reading any market summary of it.

Collectors sum the reference up as a watch of firsts: first GMT-Master II, first independently adjustable 24-hour hand, first red-and-black configuration on the line, first sapphire crystal, first white-gold-surround indices on a GMT. Clean, original-condition examples carry a premium to match.

Related references

See also the GMT-Master family index, movement reference, bracelet & clasp guide, and serial numbers by year.

Sources

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