BezelBase

Reference:16700


GMT-Master -> 16700

The 16700 is the last classic GMT-Master — the final reference with the synchronized "caller" 24-hour hand. Production ran 1988 to 1999 across the dominant editorial reading; the Vintage Rolex Field Manual closes the run at 1998 — minority view. Caliber 3175 is exclusive to this reference: 31 jewels, 28,800 vph, 48-hour reserve, hacking, quickset, adjusted to 5 positions and temperature, COSC. The 16700 ran in parallel with the GMT-Master II 16710 (1989–2007) for a decade. The Chuck Yeager / Real McCoy's 50-piece special edition (1997, caseback engraved "General Chuck Yeager, Bell X-1, October 14th 1947") is the principal collector branch.

Error creating thumbnail: Unable to save thumbnail to destination
Late Pepsi 16700

Core facts

detail value
reference 16700
family GMT-Master (final reference of the original GMT-Master line)
production 1988 to 1999 (Sotheby's, Bonhams, Fratello, WatchBase, Lange Dyk, Bob's, Gray & Sons, Everest consensus); Vintage Rolex Field Manual reads 1988 to 1998 — minority view
total examples no published Rolex production figure across any source. Bonhams describes it as "notably fewer units produced than its counterpart [the 16710]"; Sotheby's says "smaller quantities despite its decade-long run"
case 40mm steel Oyster
crystal sapphire with Cyclops over date
water resistance 100m
movement caliber 3175, 31 jewels, 28,800 vph, 48-hour reserve. COSC chronometer-rated, hacking, quickset date, Glucydur balance with Microstella screws, Breguet hairspring, Kif shock. One-reference-only caliber
GMT mechanic caller GMT — main hour hand sets in one-hour clicks, 24-hour hand stays linked to the local hour hand. Last GMT-Master with this synchronized layout
bezel bidirectional 24-hour aluminium insert. Pepsi (red/blue) and all-black are the only factory configurations. Coke (red/black) on a 16700 is not factory — aftermarket or service swap
bracelet Oyster 78360 with 501 / 580 end-links + folding clasp through most of the run; later Oyster 78790 with Oysterlock from late production; Jubilee 62510H with 502B optional
key identity last GMT-Master with linked-hand "caller" GMT logic; only sapphire-crystal example of that classic mechanism

Where it sits in the line

The 16700 closes the original GMT-Master line — single hour hand mechanism, fixed 24-hour hand, one number. It follows the 16750 and runs in parallel with the GMT-Master II 16710 for a decade (1989 to 1999). After 1999 only the GMT-Master II line continues, eventually through the 116710LN and the current 126710 series. The 16700 is therefore both the final classic GMT and the only sapphire-crystal example of the classic synchronized-hand mechanism — that pairing anchors the reference's identity for the modern collector.

Caller vs flyer GMT

The 16700 is a caller GMT. The 16760 (cal. 3085) and 16710 (cal. 3185 / 3186) are flyer GMTs. The terminology splits the GMT-Master family cleanly:

  • Caller GMT — main hour hand sets in one-hour clicks via the crown; 24-hour hand stays locked to the local hour hand and follows it. The second time zone is read by rotating the bidirectional 24-hour bezel. The 16700's "phone-callable" home base means rotating the bezel to a home-offset reading and glancing at the 24-hour hand for the time at home.
  • Flyer GMT — 24-hour hand rotates once per 24 hours independent of the local hour hand. The local hour hand jumps in one-hour increments without disturbing the minutes or seconds. The wearer sets the local hour hand on arrival; the 24-hour hand keeps tracking home; a third zone reads off the bezel.

A specific subset of collectors chases the 16700 over the contemporary 16710 for the original travel logic. The linked-hand mechanism means the local hour hand jumps in one-hour steps when the date is advanced — the original GMT-Master operating feel from the 1950s preserved in a sapphire-crystal modern case.

Production outline

Production began in 1988 — unanimous across the published literature. The end year is contested: most editorial and auction-house sources converge on 1999, while the Vintage Rolex Field Manual closes the run at 1998 — minority view. Late examples in the market circulate as "1998" or "1999" depending on papers dates rather than any agreed cutoff.

Total production output is not published. Bonhams reads the 16700 as "notably fewer units produced than its counterpart [the 16710]"; Sotheby's says "smaller quantities despite its decade-long run". The 16700 is directionally rarer than the 16710, with no number to attach.

Movement notes

Caliber 3175 is the final GMT-Master movement — a one-reference caliber exclusive to the 16700. Specifications converge across the published literature and major-house lot catalogues: 31 jewels, 28,800 vph (4 Hz), 48-hour power reserve, hacking seconds, quickset date, Breguet hairspring, Glucydur balance with Microstella screws, Kif shock protection, COSC chronometer-rated, adjusted to 5 positions and temperature.

The 3175 is the last fixed-GMT movement that did not have an independently adjustable GMT hand. The independently set GMT hour hand belongs to the 3085 (16760, 1983–1989) and the 3185 / 3186 (16710, 1989–2019) — not the 3175. Sotheby's collector guide line about an "independently adjustable flying GMT hand" on the 16700 is a published error rather than an interpretive contradiction; the 16700 caliber 3175 is unambiguously a caller GMT in every primary, secondary, and auction-house source surveyed.

The lineage: 3175 supersedes the 3075 used in the 16750 and is the terminal "linked-hand" GMT caliber. Production span of the movement itself: 1988 to 1999, used exclusively in the 16700.

A small open question on service-replacement patterns: Antiquorum Lot 88 explicitly recommends "an overhaul at buyer's expense," and Sotheby's Lot 10 notes "very minute corrosion spots" on the movement — together suggesting service intervention is common on late-1990s examples, but no surveyed source quantifies the rate at which Rolex service swapped a 3175 for a 3185 during overhaul. The 3175 is a one-reference caliber — movement parts were not shared with the parallel 16710, so a service swap would be a deliberate movement replacement rather than an incidental parts substitution.

Dial map

 
Black-bezel 16700

Glossy black with applied white-gold-surround indices is standard across the run. Two evolutions on the dial side and one factory-controversy.

Open vs closed 6/9 date wheel

Open 6/9 date wheels — numerals on the date disc drawn with open loops — run through approximately 1992. Closed-style wheels after. The Field Manual records the cutoff. A late-serial 16700 presenting an open-6/9 wheel is a prompt to examine the dial and hands more carefully — service departments occasionally swapped date discs during movement work, and a disc that does not line up with the expected production year is one of the easier tells on an otherwise clean watch. Overlap at the boundary is plausible and no public Rolex service record pins the switchover to a month, so 1992 reads as a flag rather than a verdict.

Tritium to Luminova / Super-LumiNova transition

The lume transition runs from tritium ("SWISS T<25") to approximately 1997, then post-tritium luminescent compound thereafter. Two readings of the post-tritium compound surface in the literature: Bob's, Sotheby's, Gray & Sons, and WatchBase read 1997 as the Luminova start, with Super-LumiNova following on later examples; Monochrome skips the Luminova step and has the watch move straight from tritium to Super-LumiNova in 1997. Both readings are in print from credible sources; neither has been overturned. Some Luminova examples carried over T<25-marked dial stock during the changeover.

For a late non-tritium 16700, the defensible collector position is "post-tritium luminescent" with a close look at the dial foot and lume colour. Buyers who want the question closed usually restrict themselves to early-1997 or earlier tritium dials, where both references agree.

"Stick" dial (late examples)

A "stick" dial subset is mentioned in late-1990s Sotheby's listings — numerals only, no Roman numeral 6 or 9. Documented examples appear in 1991 Pepsi listings; the variant has not been mapped to a strict serial range.

Case, bezel, crystal, and crown

 
Pepsi bezel close-up

The case is the familiar 40mm steel Oyster of the late five-digit period. Sapphire crystal with Cyclops over the date separates the 16700 immediately from the acrylic 16750 it replaces. The 100m water-resistance rating is unchanged from the 16750. The 16700 is the only sapphire-crystal example of the original synchronized-hand GMT-Master mechanism — that combination is the reference's mechanical identity.

The bezel is bidirectional 24-hour aluminium insert in two factory configurations: Pepsi (red/blue) and all-black. Pepsi dominates the surviving population. Coke (red/black) is not a standard 16700 option — Bob's Ultimate Guide explicitly says the Coke "appears on some examples but was not a standard option" and these are aftermarket or service swaps. The factory Coke is a 16710 / 16760 trait; do not promote Coke as a 16700 branch.

Bracelets, end links, clasps, and packaging notes

Period-correct delivery is the Oyster 78360 with 501 (early) or 580 (mid-run) end-links and a folding clasp through most of the production window. Bonhams Lot 4 (1988) carries a 78360 Oyster with signed folding clasp stamped RS11 (the RS11 clasp code is unusual; most published examples use 580 / 501).

Later production transitions to the Oyster 78790A with Oysterlock, documented on late-1990s examples across the published literature. The Jubilee 62510H with 502B end-links was the optional dressy fitment.

Antiquorum Lot 88 (Geneva June 2020) documents a 1996 head with a 93150/501B Oyster bracelet. The 93150 is a service or later replacement reference — it became standard on the 16710 — so the bracelet on that lot is service-era rather than original delivery. Period-correct mapping for the article: Oyster 78360 with 501 / 580 end-links throughout the early-to-mid run, Oyster 78790 from late production; 93150 fittings are service-era.

Chuck Yeager / Real McCoy's special edition

A 50-piece special edition of the 16700 was produced in 1997 by The Real McCoy's (the Japanese vintage-clothing reissue brand) with caseback engraving "General Chuck Yeager, Bell X-1, October 14th 1947, [n]/50, The Real McCoy's." The reference commemorates Yeager's October 1947 supersonic flight in the Bell X-1. Three independent auction-house lots document the branch:

  • Bonhams Lot 969 (24 November 2018) — No. 14/50, case U443556, full set, incl. premium.
  • Phillips Hong Kong XI Lot 862 (28 November 2020) — No. 21/50, case U453541, est. HK$ 120,000–250,000.
  • Sotheby's Hong Kong Important Watches 2019 Lot 2023 — c.1999, case A245609, est. HK$ 160,000–320,000.

Antiquorum also catalogued a 16710 Real McCoy in the Monaco 16 July 2017 sale — a cross-reference for the LE program but not a 16700 lot.

Historical market and auction record

Sale Lot Year Serial Variant / config Hammer
Bonhams 25956/4 2020 R-serial 1988 Pepsi, 78360 / RS11 clasp GBP 10,687.50 incl. premium
Antiquorum Geneva 329-88 2020 T254282 1996 Pepsi delivered Dec 1996, full set with original Beyer receipt CHF 11,875
Sotheby's Geneva Important Watches 10 2019 T848499 c.1996 Pepsi, cal. 3175, with extra black bezel est. CHF 6,000–8,000
Sotheby's Fine Watches Online 417 2024 W752611 c.1995 Pepsi, faded bezel, tritium dial est. EUR 8,000–12,000
Bonhams 25232/969 2018 U443556 1997 Chuck Yeager / Real McCoy's No. 14/50, full set HK$ 106,250 incl. premium
Phillips Hong Kong XI 862 2020 U453541 c.1997 Chuck Yeager / Real McCoy's No. 21/50 est. HK$ 120,000–250,000
Sotheby's Hong Kong Important Watches 2023 2019 A245609 c.1999 Chuck Yeager / Real McCoy's est. HK$ 160,000–320,000

The 16700 trades as a usable late-vintage GMT-Master, not an auction trophy. Pepsi side carries the classic family look and commands the stronger general-market premium; the black bezel attracts a narrower collector audience that values the quieter late-run alternative. Standard examples cluster GBP 8,000–15,000 / CHF 8,000–15,000 across the major houses depending on dial generation, lume status, and paperwork. The Chuck Yeager / Real McCoy's special edition sits in its own tier above the standard market — the three documented lots all clear well above HK$ 100,000.

Sources

Retrieved from "https://bezelbase.org/index.php?title=Reference:16700&oldid=4177"