Reference:4925: Difference between revisions
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== Case and construction == | == Case and construction == | ||
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File:Ref 4925 case-profile.webp|Case profile: screw-down manual-wind crown, no Twinlock | |||
File:Ref 4925 caseback-exterior.webp|Smooth caseback exterior, no date stamp | |||
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34mm stainless steel three-piece Oyster — case middle, threaded caseback, threaded crown. The case profile reads closer to the post-war flat Oyster than to the pre-war Bubbleback proper; the Cal. 10½ Hunter doesn't need the rotor-clearance dome. Lugs are 19mm with drilled spring-bar holes. The bezel is fixed and steel and smooth. The crown is a manual-wind brevet, screw-down, no Twinlock; the 4925 predates Twinlock, which arrives in the 1950s on the Oyster sport line. | 34mm stainless steel three-piece Oyster — case middle, threaded caseback, threaded crown. The case profile reads closer to the post-war flat Oyster than to the pre-war Bubbleback proper; the Cal. 10½ Hunter doesn't need the rotor-clearance dome. Lugs are 19mm with drilled spring-bar holes. The bezel is fixed and steel and smooth. The crown is a manual-wind brevet, screw-down, no Twinlock; the 4925 predates Twinlock, which arrives in the 1950s on the Oyster sport line. | ||
The case is steel-only across documented examples. The 4444 (Air-Lion / Air-Giant / Air-King) carries a documented two-tone construction with a solid-gold bezel and crown, but the 4925 is consistently catalogued in plain steel. Sotheby's lot 190 (2020) gives 33mm rather than 34mm — within measurement-method tolerance for a watch usually quoted at 34mm. Across all surfaced major-house lots the case dimensions read consistent. | The case is steel-only across documented examples. The 4444 (Air-Lion / Air-Giant / Air-King) carries a documented two-tone construction with a solid-gold bezel and crown, but the 4925 is consistently catalogued in plain steel. Sotheby's lot 190 (2020) gives 33mm rather than 34mm — within measurement-method tolerance for a watch usually quoted at 34mm. Across all surfaced major-house lots the case dimensions read consistent. | ||
The caseback exterior is smooth without a date stamp. The interior carries reference and case-number markings. Roman-quarter date codes (II.46, III.48, IV.51, etc.) inside the caseback are the cleanest per-watch dating tell. Drilled spring-bar holes are period-correct on the 4925 lugs and persist into the 5500 era; the convention on the 4925 is consistent with the broader pre-1990 vintage Rolex line. | The caseback exterior is smooth without a date stamp. The interior carries reference and case-number markings. Roman-quarter date codes (II.46, III.48, IV.51, etc.) inside the caseback are the cleanest per-watch dating tell. Drilled spring-bar holes are period-correct on the 4925 lugs and persist into the 5500 era; the convention on the 4925 is consistent with the broader pre-1990 vintage Rolex line. | ||