Reference:6552

Air-King -> 6552

The 6552 is the first automatic Air-King — a four-year reference (1953–1957) that sits between the hand-wound 4925 and the long-running 5500. Inside the case is Cal 1030, Rolex's first bidirectional self-winding caliber, with the butterfly rotor stamped ROLEX PERPETUAL PATENTED. The dial reads AIR-KING / SUPER PRECISION rather than the chronometer-rated OYSTER PERPETUAL text the contemporary Submariner and Explorer carried, even though the movement underneath was being adjusted to chronometer grade. The 6552 is where the Air-King first becomes the entry-tier Rolex with a flagship-tier movement underneath.

The reference is rare at major-house auction. Antiquorum's Mondani Collection lot 108-89 (Geneva, 14 May 2006, hammer CHF 7,080) is the strongest single anchor; Dorotheum, Monaco Legend Group, and a handful of European weekly sales round out a documented record of four named-house lots in total. Phillips, Sotheby's, and Christie's have no standalone 6552 catalogue lot in the auction record through 2025 — the 5500 absorbs the major-house attention, and the four-year production window left fewer 6552s in circulation to anchor headline essay material.

Core facts

detail	value
reference	6552 (caseback inside often stamped 6565 — period-correct, see Production outline)
family	Air-King
common name	"the Cal 1030 Air-King," "the first automatic Air-King"
production	1953–1957 active production; case-stock completion documented through 1959
case	34mm × 12.5mm stainless steel Oyster, smooth bezel, drilled lugs (19mm)
crystal	acrylic plexiglass, domed
crown	screw-down (Twinlock-era; Twinlock patent dates to 1953 but lot text on 6552s reads simply "screw-down")
movement	Cal 1030, 25 jewels, 18,000 vph, ~42 hour reserve, bidirectional butterfly rotor, Breguet balance spring, monometallic balance adjusted to five positions and temperature
dial text	"AIR-KING" + "SUPER PRECISION" — dial sub-chronometer-grade despite movement adjustment
chronometer	no — dial text is "Super Precision" (entry-tier), not "Officially Certified Chronometer"
bracelet	19mm Oyster — period-correct rivet 7205 + 57 end-link (Craft + Tailored 1958 example)
water resistance	50m (Marcus Siems and Robb Report consensus); Time-Wire reads 100m — the 50m figure is better-sourced
caseback	screw-down threaded Oyster; inside stamped 6565 (case-only ref shared with the chronometer-grade Oyster Perpetual sibling), 6552 stamped between the lugs
predecessor	4925 (1945–53, hand-wound Cal 10½ Hunter)
successor	5500 (1957–89, Cal 1530 then 1520)

Where it sits in the line

The 6552 closes the founding vintage Air-King trilogy. The 4925 (1945) introduced the Air-King name on a hand-wound 34mm Oyster. The 6552 (1953) carried the same case envelope forward but replaced the Cal 10½ Hunter with the bidirectional Cal 1030 — Rolex's first in-house designed chronometer-grade automatic caliber. The 5500 (1957) inherits the case again and runs Cal 1530 then 1520 across 32 years. The architecture handoff at each step is the same: keep the 34mm Oyster, swap the movement.

The 6552's Cal 1030 sits at the centre of an architecturally important moment. The same caliber powers the contemporary 6534 / 6536 small-crown Submariner (1955–58), the 6610 Explorer (1955–59), and the 6202 Turn-O-Graph at the end of its production. These four references — 6552 Air-King, 6536 Submariner, 6610 Explorer, 6202 Turn-O-Graph — share the Cal 1030's architecture and run roughly in parallel through the mid-1950s. The 6552 is the Air-King's only true Cal 1030 reference; by the 5500's introduction in 1957 the line is already moving onto the Cal 1530 / 1520 era.

The 1002 Oyster Perpetual that some sources identify as a 6552 sibling actually arrives later (1959 onward) and overlaps with the 5500 rather than the 6552. The 5504 (36mm oversized Air-King with an Explorer-case profile) sits parallel to the 5500 from 1958, post-dating the 6552.

Production outline

The 1953 introduction year is consensus across Goldammer (Marcus Siems byline), Monochrome (Erik Slaven, January 2025), Robb Report's Air-King guide, Rolex Magazine (Jake Ehrlich), and Watch-Wiki. The 1957 retirement year — when the 5500 takes over — is similarly consensus. The four-year window is shorter than any other Air-King reference; the line moved fast through this caliber generation before settling on the 1530 family for the 5500.

One general-family editorial source conflates the 6552 with a non-existent 6652 throughout, dating "6652" to roughly 1954 and describing it as "12 months before the GMT." The reference number is wrong — there is no 6652 Air-King.

Surviving 6552s often carry case numbers that date to 1958 or 1959 — past the 1957 active-production end. Antiquorum lot 108-89 (case 437,255) is dated 1959; Monaco Legend Group July 2024 lot 72 (case 376,058) is 1958; Dorotheum lot 145-051401/0001 (case 376,310) is c.1958. The pattern is the same as the 6610 Explorer (active production ends 1959, retail through 1963) — leftover cases continued to be assembled and dispatched to dealers after the catalogue end-date, often with later parts and movement service swaps already in place.

Total production output is not published by Rolex. The four-year production window plus the 6552's modest profile in its day suggests substantially smaller output than the 5500. The reference is rare at major-house auction not because it was inherently scarce in production but because most surviving examples sit in the dealer market or in private collections rather than circulating through Phillips / Sotheby's / Christie's headline sales.

The caseback stamping deserves explicit attention. Inside the caseback the 6552 typically reads 6565 — the case-only reference shared with the chronometer-grade Oyster Perpetual sibling that ran in parallel and used the same case middle. The 6552 designation appears stamped between the lugs as the model reference. This duality is correct and original, confirmed across Antiquorum lot 108-89 ("the back is stamped 6552, the case is stamped 6565") and the Relojes Vintage Mexico Patrizzi-documented 1958 example. A 6552 caseback stamped only "6552" inside is unusual; "6565" inside with "6552" between the lugs is the period-correct configuration.

Movement notes

The 6552 runs Cal 1030 — Rolex's first bidirectional self-winding caliber, introduced in 1950 with the butterfly rotor that succeeded the uni-directional thicker-rotor A-series Perpetuals (A260 / A290 / A295 / A296). The 1030 is the architectural fork in the Rolex movement timeline: every Rolex automatic before it was uni-directional and required the bubbleback caseback dome for rotor clearance; the 1030's slimmer butterfly rotor eliminated the need for the dome and powered the post-1950 generation of slim-cased Oysters.

Specifications across documented examples: 25 jewels, 18,000 vph, approximately 42-hour power reserve, Breguet balance spring, monometallic balance adjusted to five positions and temperature. The Antiquorum lot 108-89 catalogue text quotes the canonical spec: "Cal.1030, rhodium-plated with decoration. 25 jewels, straight line lever escapement, monometallic balance adjusted to five positions and temperature, with Breguet balance spring." Dorotheum's lot describes movement N809,993 with the same spec.

The chronometer status is the interesting question. The 6552's Cal 1030 movement was being adjusted to chronometer grade in many examples — the Antiquorum lot's "five positions and temperature" adjustment is itself the COSC adjustment standard. But the dial reads "AIR-KING / SUPER PRECISION" rather than "OFFICIALLY CERTIFIED CHRONOMETER," which keeps the watch in the entry tier despite the underlying movement quality. Marcus Siems makes the distinction explicit: "in contrast to other Oyster Perpetuals these Air-Kings weren't Chronometer certified and marked Super Precision." The 6552 walks the line — chronometer-grade movement, sub-chronometer dial designation. Both can be true simultaneously and frequently are on the same watch.

Eric Wind, writing at Wind Vintage in his Perpetual Movement Part 2 piece, describes the 1030's red-anodized aluminium wheels in the self-winding module as the first time Rolex's own self-winding architecture appeared, and frames the 1030 as the first in-house designed chronometer-grade calibre. The 1030 begins the line that runs forward through the 1530 / 1520 (5500 era), the 1560 (early 1016 Explorer), and the 1565 / 1570 (Submariner / Sea-Dweller). Reading the 6552 as the Air-King's only Cal 1030 reference puts it in the same architectural moment as the small-crown Submariners and the early Explorer.

Dial map

Five documented dial variants surface in the major-house auction record. The 6552 dial map is narrower than the 5500 — fewer surfaced examples, less variation — but the variation that exists is real and well-anchored.

Silvered with applied baton indices

The production-volume dial. Silvered or matte-grey ground, applied dart or baton hour markers, alpha hands, central seconds, "AIR-KING" at twelve and "SUPER PRECISION" above six. The dial sits as the standard configuration across the four-year production window. Antiquorum Mondani lot 108-89 (1959, case 437,255), Dorotheum lot 145-051401/0001 (c.1958, case 376,310), Monaco Legend Group lot 72 (1958, case 376,058) all wear this dial.

Explorer 3-6-9 with applied coronet

A documented early-run dial layout — silvered ground with 3-6-9 Arabic numerals at three, six, and nine, spear-faceted indices at the other hours, applied coronet at twelve. The same Explorer-style 3-6-9 layout that runs across the 5500's later production already appears on the 6552 in its first years. The Goldammer Air-King family history names "spear indices and Explorer(ish) Arabics" as the early-run configuration, and a RolexForums archive thread (936946) catalogues an early 6552 with a 3-6-9 dial as "fairly rare." Time-Wire confirms the same layout for the early run. No major-house lot anchors the 3-6-9 6552 in the auction record, leaving the variant well-supported by editorial but light on auction-house provenance.

Black gloss / black gilt step-dial

A third documented variant surfaces in marketplace listings catalogued as "EXTREMELY RARE ROLEX AIRKING 6552 SUPER PRECISION w/ BLACK GILT STEP-DIAL". Glossy black lacquer or gilt-on-glossy ground, stepped dial profile with the indices and AIR-KING / SUPER PRECISION text on a raised inner section. A documented 1958 example (signed "Oyster Perpetual" only at six rather than carrying AIR-KING text) wears the same dial type aged to a tropical chocolate-brown — the original and the tropicalised version of the same configuration. The black gloss step-dial 6552 is dealer-grade evidence; corroboration from a major-house lot would lift the variant from "documented at marketplace" to "auction-anchored."

Tropical chocolate

A documented 1958 6552 surfaces with a "glossy deep brown tropical dial" — the gloss black step-dial above aged through decades of UV exposure to a uniform chocolate-brown. The dial is signed "OYSTER PERPETUAL" only at six rather than carrying AIR-KING text, suggesting either a sister 1002-class dial or a service-replacement dial swap. The configuration is the only documented tropical 6552 in documented examples — the rate of tropical conversion appears low compared to later Cal 1530 / 1520 5500s.

Patrizzi two-tone (creamy outer + sunburst silver inner)

The most book-grade rarity in the 6552 dial map. A 1958 example documented in Osvaldo Patrizzi's Rolex, Collecting Wristwatches (2001 edition, page 184) carries a two-tone dial — creamy outer ring with a sunburst silver inner section — and is unsigned (no "OFFICIALLY CERTIFIED CHRONOMETER" text). The same watch's documented record notes the caseback duality (6552 between the lugs, 6565 inside) explicitly. The Patrizzi-book documentation is the strongest provenance anchor in the 6552 dial map; the configuration itself is rare.

The honeycomb / clous-de-Paris, all-Arabic UK-market, and retailer-signed (Tiffany / Cartier / Beyer / Asprey / Joyería Riviera) 6552 configurations have not surfaced in the auction record. Honeycomb dials of this era live on the 6305 Datejust, 6202 Turn-O-Graph, 6350 / 6298 Explorer / Bubbleback rather than on the 6552. Tiffany-signed Air-Kings are a 5500-era story (Wind Vintage's Tiffany 5500 is the documented anchor); no 5500-era retailer signature has been documented on a 6552. Their absence is not proof — additional variants may surface as auction catalogues digitise older sales — but the documented record does not currently carry them.

Case and construction

34mm × 12.5mm stainless steel three-piece Oyster — case middle, threaded caseback, threaded crown. The case profile reads slimmer than the pre-1950 Bubbleback architecture that the 4925 inherited; the Cal 1030's butterfly rotor is the architectural reason the case middle could come down to ~12.5mm without rotor clearance issues. Lugs are 19mm with drilled spring-bar holes. The bezel is fixed and steel and smooth.

The crown is a screw-down. Twinlock — Rolex's two-gasket sealed-crown patent — was filed in 1953, the same year the 6552 launched, but no surfaced 6552 lot text specifically marks the watch as "Twinlock-equipped." The convention reads simply "screw-down crown." Twinlock branding becomes formally consistent on Rolex sport references later in the 1950s; 6552-era crowns may or may not carry the patent markings depending on production date within the four-year window.

The 6552 is steel-only across documented examples. No two-tone, no gold-capped, no precious-metal 6552 has surfaced. The two-tone gold-capped Air-Kings live on adjacent reference numbers — 5501 (Rolesor with gold fluted bezel), 5502 / 5506 (gold-capped 40-micron) — that post-date the 6552 and run alongside the 5500 rather than alongside the 6552.

Water resistance reads at 50m on the Marcus Siems and Robb Report sources (and on most period dial markings reading "50m = 165ft"); Time-Wire reads 100m, which is the 5500-era specification. The 50m figure is better-sourced and consistent with the period rating Rolex used on the entry-tier Oyster line.

Bracelets, end-links, and clasps

19mm lug width across the production. The period-correct delivery configuration on a 6552 is a riveted Oyster bracelet 7205 with end-link 57 — A documented 1958 6552 (white dial, serial 37x,xxx, original radium hands) carries this fitment. The 7205 / 57 combination is also the early-run configuration on the 5500 that succeeds the 6552, so the bracelet-end-link pairing carried straight across the reference transition without a generation change.

Most surviving 6552s wear later bracelets — service-era refits with the 7835 folded-link (1969+) or 78350 solid-link (1976+) Oysters succeeding the original 7205. Bracelet originality on a 6552 needs case-and-clasp-date verification rather than relying on the bracelet reference number alone. A 6552 on a 7835 or 78350 is service refit, not original delivery.

Special branches

The 6552 era pre-dates the documented Air-King special-branch programs. Domino's Pizza, Pool Intairdril, Circle Bar Drilling, Winn-Dixie, Levi's, the Royal Saudi Armed Forces / UAE / Bahrain / Kuwait government-crest commissions are all 5500-era — they begin no earlier than 1977 (Domino's) and concentrate in the 1980s. No documented military-issue 6552, no retailer-signed Joyería Riviera or Tiffany 6552, no commissioned-engraved 6552 has surfaced in the auction record through 2025.

What does qualify as a special branch on the 6552 is the dial-variant rarity captured above: the Patrizzi-documented two-tone, the Explorer 3-6-9 early-run, the black gilt step-dial, and the tropical chocolate. These are the 6552's distinguishing variants, not commemorative commissions.

Historical market and auction record

Sale	Lot	Year	Reference details	Result
Antiquorum Mondani Collection (Geneva)	108-89	2006	6552 / 6565 case 437,255, 1959, silvered two-tone with alpha hands, Cal 1030	Hammer CHF 7,080 (est. CHF 2,000–3,000)
Dorotheum (Vienna)	145-051401/0001	c.2024	6552 c.1958, case 376,310, movement N809,993, silvered with applied indices	EUR 4,096
Monaco Legend Group July Online Sale	72	2024	6552 1958, case 376,058, silvered	USD 1,478 (est. USD 1,083–2,167)
(Subscriber-gated European weekly sale, attribution via EveryWatch)	25	—	6552 1959, case 437,256, two-tone silvered	USD 1,306–1,958 sold band
(Subscriber-gated, attribution via EveryWatch)	181	—	6552 1956, silvered	est. USD 1,200–1,500, sold

The 6552 trades in roughly the USD 1,500–8,000 band for clean original examples. The Antiquorum Mondani Collection example at CHF 7,080 sits at the top of the range — its Mondani Collection provenance and clean originality drove the result. Rare dial branches (Explorer 3-6-9, black gilt step-dial, Patrizzi two-tone, tropical) carry premiums into the USD 6,000+ range based on dealer-side asks. Phillips, Sotheby's, and Christie's have no documented standalone 6552 lots through 2025 — the 5500 absorbs the major-house attention.

Authentication

The 6552 is 70 years old. The first question on any 6552 is originality across the case, dial, movement, and crown, and most surviving examples have been serviced multiple times in that span. The dial restoration window of the 1980s–2000s caught many 6552s; a perfectly clean original-looking dial reads as suspect; dials with even minor period patina are the originality positive.

The caseback stamping is the cleanest single authentication anchor: 6552 between the lugs, 6565 inside the caseback, both correct on a period-original 6552. A caseback stamped only with the model reference inside (no 6565) is unusual and worth examining; conversely a caseback stamped only with 6565 (no 6552 between the lugs) suggests a service replacement caseback or case-middle swap. The Antiquorum lot 108-89 catalogue text describes the configuration explicitly — period-original 6552s carry both stampings.

The case-number band runs roughly 350,000–440,000 across documented examples, with the latest dated examples from 1959 carrying numbers in the 437,000–438,000 range. A 6552 with a case number well outside this band — particularly anything above 600,000 — should be examined as a potential service-replacement case middle. The Roman-quarter date code inside the caseback (II.55, III.57, IV.58, etc.) should be period-consistent with the case-number band.

The movement number versus the case number is the standard authentication anchor. Both should be period-consistent and both should match the catalogue's recorded ranges. A 6552 with a Cal 1530 or Cal 1520 (5500-era) movement is service-replacement and not original — the 6552 should always carry a Cal 1030 with its butterfly rotor stamped ROLEX PERPETUAL PATENTED. A non-1030 movement on a 6552 case is a service event, not a rare configuration.

The bracelet usually doesn't help. Most surviving 6552s wear bracelets that post-date the 6552's own production window — 7835 folded-links from the 1970s or 78350 solid-links from the 1980s. Authenticate the head and movement first, read the bracelet as supplementary evidence rather than as an originality anchor.

Sources