Late 1940s Omega “Seamaster Chronometer” with Caliber 333 – Bumper Automatic
A rare 36mm jumbo waterproof 14K yellow gold model with a two-tone dial.
This piece is equipped with the Chronometer-grade Cal. 333, a particularly rare early automatic movement featuring a half-rotor (bumper) system and a unique round regulator mechanism. Among bumper automatic models—typically seen in 33–35mm sizes—this example stands out with its uncommon 36mm jumbo screw-back waterproof case.
It offers the substantial feel of solid gold and the bold presence unique to jumbo-sized models.
The high-quality two-tone dial, featuring applied indexes and dolphin hands, shows signs of aging, but the patina adds a rich, appealing character.
A rare 36mm jumbo waterproof 14K yellow gold model with a two-tone dial.
This piece is equipped with the Chronometer-grade Cal. 333, a particularly rare early automatic movement featuring a half-rotor (bumper) system and a unique round regulator mechanism. Among bumper automatic models—typically seen in 33–35mm sizes—this example stands out with its uncommon 36mm jumbo screw-back waterproof case.
It offers the substantial feel of solid gold and the bold presence unique to jumbo-sized models.
The high-quality two-tone dial, featuring applied indexes and dolphin hands, shows signs of aging, but the patina adds a rich, appealing character.