Rolex Oyster Royal 2280

Steel Rolex Oyster ref. 2280 with sector dial — Ref. 2280, case 77585, catalogued circa 1940. Photo: Antiquorum, lot 214.

Ref. 2280 is a manual-wind Oyster. Auction catalogues use names including Oyster Royal, Oyster Royal Observatory, Oyster Royalite and Oyster Majestic Observatory; one Christie’s lot title also includes Observator and R.W.C. Ltd. The lots show centre and subsidiary seconds, sector and 12/24-hour dials, and steel bracelet pairings. Their dates range from circa 1935 to circa 1943, with other catalogues giving only “1940s”; these are dates assigned to individual watches, not confirmed production limits. Christie’s, circa 1935 Christie’s, circa 1935 Antiquorum, 1940s Christie’s, circa 1943

Core facts

Detail	Documented record
Reference and names	Ref. 2280; lot titles include Oyster Royal, Oyster Royal Observatory, Oyster Royalite, Oyster Majestic Observatory, Observator and R.W.C. Ltd. These are catalogue wordings, not a confirmed naming sequence.
Date evidence	Auction estimates include circa 1935, circa 1936, 1939, circa 1941, circa 1942 and circa 1943; other lots say “1940s.” No source establishes production endpoints.
Case	Tonneau-shaped Oyster case, usually described as stainless steel; one 1939 Christie’s lot has a pink-gold bezel and hooded lugs. Catalogued diameters range from 29 to 33 mm.
Movement	Manual wind, with 15- or 17-jewel descriptions. Two lots specify a 10½-ligne, 17-jewel movement; no cited auction record identifies a numbered caliber.
Dial and seconds	Silver, champagne, two-tone and sector dials; Arabic numerals; subsidiary or centre seconds. Lots describe 12/24-hour and 60-unit scales.
Bracelets and straps	Antiquorum records an Oyster bracelet; Christie’s lists a Jubilee bracelet with a circa-1935 example. Other lots show leather straps and a Rolex-crown buckle.

Where it sits in the line

Oyster Royal appears in several ref. 2280 catalogue titles. Other lots use Oyster Royal Observatory, Oyster Royalite or Oyster Majestic Observatory; a Christie’s title also names Observator and R.W.C. Ltd. These labels belong to individual watches. The records do not establish a naming sequence or an observatory connection. Christie’s, Oyster Model Royal Antiquorum, Oyster Royal Observatory Toovey’s, Oyster Majestic Observatory Christie’s, Oyster Royalite / Observator / R.W.C. Ltd

Production outline

Christie’s dates examples to circa 1935 and circa 1943. Bonhams dates a Murdock’s Cape Town example to circa 1936; Christie’s gives 1939 for a steel watch with a pink-gold bezel; Phillips dates case 130’527 to circa 1941; and Toovey’s dates case 159151 to circa 1942. Antiquorum assigns circa 1940 to case 77585 and Sotheby’s circa 1942 to case 217’903. These are catalogue estimates for separate watches, not factory production dates. Christie’s Bonhams Christie’s Phillips Toovey’s Antiquorum Sotheby’s

The examples differ in case size, dial and seconds display. The catalogued diameters are 29, 30, 31 or 33 mm. Christie’s 1939 lot pairs steel with a pink-gold bezel, while the other cited listings generally describe steel cases. Christie’s, 29 mm two-tone case Antiquorum, 30 mm Spangaro, 31 mm Christie’s, 33 mm

Movement notes

The lot descriptions identify manual-wind movements but do not converge on a numbered caliber. Bonhams gives 15 jewels and a patented Superbalance; Christie’s records 17 jewels in its circa-1935 example; and Phillips lists 17 jewels without a caliber. Toovey’s movement photograph reads “ROLEX 17 RUBIES” and “PATENTED SUPER BALANCE.” Bonhams Christie’s Phillips Toovey’s

Antiquorum describes a 10½-ligne, 17-jewel lever movement with Superbalance and a self-compensating Breguet spring. Sotheby’s lists a 10½ mechanical, 17-jewel movement in case 217’903. Neither catalogue supplies a numbered caliber. Antiquorum, lot 466 Sotheby’s, lot 8042

Dial map

Christie’s circa-1935 example has a silvered dial with luminous Arabic numerals and subsidiary seconds. A second Christie’s lot, also dated circa 1935, has a two-tone gilt dial, inner 24-hour indication and centre seconds; its title records Oyster Royalite, Observator and R.W.C. Ltd. Antiquorum’s two-tone silver-and-gold dial uses radium-coated Arabic numerals, a red 24-hour scale and subsidiary seconds. Toovey’s champagne dial combines luminous Arabic numerals with an outer seconds track and inner red 24-hour scale. Phillips describes blued hands and small centre seconds; Christie’s circa-1943 dial has an outer ring calibrated to 60 units. Christie’s Christie’s Antiquorum Toovey’s Phillips Christie’s

Antiquorum’s 2025 catalogue identifies a circa-1940 Oyster Royal, case 77585, with a sector dial and 15 jewels. Its photograph shows that lot’s dial; the surviving records do not establish an order in which these layouts appeared. Antiquorum, lot 214

Case, bezel, crystal and crown

Christie’s describes the circa-1943 case as tonneau-shaped, with a smooth bezel, screw back and screw-down crown. Bonhams also records a tonneau case with screw back and crown. Toovey’s identifies a milled screw-off back and Oyster Patent winding button. The listed sizes come from separate catalogue measurements. Christie’s Bonhams Toovey’s

Christie’s 1939 lot is a steel case with pink-gold bezel and hooded lugs. Spangaro describes a domed plexiglass crystal on one 1940s example; this is a lot-specific catalogue description. The records do not give a pressure-test depth. Christie’s, 1939 example Spangaro, lot 30

Case side and winding crown, Toovey’s lot 1010
Inside caseback, Toovey’s lot 1010

Bracelet, clasp and packaging

Antiquorum catalogued a 1940s ref. 2280 accompanied by a stainless-steel Oyster bracelet. Christie’s described a circa-1935 ref. 2280 with a stainless-steel Rolex Jubilee bracelet and clasp. Rolex dates the Jubilee’s introduction to 1945, so Christie’s lot description does not establish that bracelet as original to a circa-1935 watch. Both auction records document the pairings at sale, not original delivery. Antiquorum, lot 51 Christie’s, lot 176 Rolex, Datejust and Jubilee history

Toovey’s photograph shows a Rolex-crown buckle attached to its lot’s brown leather strap. The catalogue does not date the buckle or establish its original pairing. Phillips also lists a ref. 2280 on leather. Toovey’s Phillips

Rolex-crown buckle on the auction strap. Photo: Toovey’s, lot 1010.

Auction records

Auction record	Catalogue description
Christie’s, lot 1133355	Oyster Royal Observatory; circa 1935; 30 mm; silvered Arabic dial, subsidiary seconds; 17-jewel nickel-plated manual movement.
Christie’s, lot 1809182	Oyster Royalite / Observator / R.W.C. Ltd.; circa 1935; 30 mm; two-tone gilt 24-hour dial, centre seconds; listed with a Rolex Jubilee bracelet and clasp.
Bonhams, London, 18 May 2010, lot 244	Oyster Royal; circa 1936; case 81877; 30 mm; steel; 15-jewel movement with patented Superbalance; cream dial called repainted.
Antiquorum, Geneva, 15 October 2000, lot 51	Oyster ref. 2280; 1940s; 30 mm; 10½-ligne, 17-jewel movement; described as accompanied by a steel Oyster bracelet.
Antiquorum, Hong Kong, 7 June 1999, lot 466	Oyster Royal Observatory; 1940s; 30 mm; two-tone 12/24-hour dial, subsidiary seconds; 10½-ligne, 17-jewel lever movement.
Christie’s, lot 4403759	Ref. 2280; 1939; case 153193; steel case with pink-gold bezel and hooded lugs; 29 mm; subsidiary seconds.
Antiquorum, Geneva, 8–9 November 2025, lot 214	Oyster Royal; circa 1940; case 77585; 30 mm; 15 jewels; sector dial.
Phillips, Hong Kong Watch Auction: Nine, lot 969	Ref. 2280; circa 1941; case 130’527; stainless steel; 30 mm; manual 17-jewel movement; small centre seconds.
Sotheby’s, Hong Kong, 4 March 2021, lot 8042	Oyster Royal; circa 1942; case 217’903; 30 mm; described as 10½ mechanical, 17 jewels.
Toovey’s, 24 February 2022, lot 1010	Oyster Majestic Observatory; circa 1942; caseback stamped 159151 over 2280; 30 mm; 17 rubies and Patented Super Balance visible on movement.
Christie’s, lot 1695249	Oyster Model Royal; circa 1943; 33 mm; centre seconds and outer 60-unit ring; screw back and crown.
Spangaro, 27 September 2025, lot 30	Ref. 2280; 1940s; 31 mm; two-tone dial, subsidiary seconds; catalogue describes domed plexiglass.

Gallery

Sector dial and case, Antiquorum lot 214
Inside caseback, Toovey’s lot 1010
Side profile and crown, Toovey’s lot 1010
Rolex-crown buckle, Toovey’s lot 1010