1940s Omega Cal.30.10 Bumper Automatic Two-Tone Silver Roman Dial Rare Engraved Back

Manufacturer Omega
Model Bumper Automatic
Year of Manufacture 1940s
Reference no. 2374-4
Product no. B-10073

Omega, Cal. 30.10 powered, Bumper Automatic, two-tone silver dial with roman indexes, rare engraved back case, circa 1940s.


It is one of the rare half-rotor bumper automatic models before the full-rotor automatic models were born, and its distinctive mechanical sound is unique to bumper type watches. The unique water-resistant case with metal O-rings on the snap-back cover and the silver two-tone dial with luminous Roman design are a gem of the era and great taste. This is a rare engraved back model for a ring snap back waterproof case, and the 11 o'clock lug is engraved with the Portuguese name.

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Item details

Serial no. ---
Caliber 30.10RAPC
Movement no. 10,231,***
Movement type Automatic
Material Stainless Steel
Case size 35mm
Case type Snap-back,Waterproof
Dial Original
Type of Indices Luminous
Belt Non-original (lug width: 18mm)
Evaluation case 93%
Evaluation dial 93%
Evaluation mov 93%
Condition 4.5
Rarity 4.5

Other details

Case: Minor scratches and aging, but retains its original shape and volume, as well as the engraving on the back.

Dial: sSight aging and minor scratches, but retains the two-tone color and the original radium luminescence.

Movement: Unadjusted, will be delivered after maintenance.