Vintage 1948 Omega Bumper Automatic Cal 351 Movement 34mm Steel Case Parts

About this item

A vintage Omega "bumper" automatic movement, calibre 351, still mounted in a 34mm stainless steel wristwatch case with elegant hooded, curved lugs and its crown. The movement bridge is signed "OMEGA WATCH Co. SWISS", "SEVENTEEN 17 JEWELS", serial 11876451, and the calibre number 351 with the Omega symbol is stamped under the barrel wheel. The serial number dates it to around 1948. Sold as a project base: the dial, hands, oscillating weight (bumper rotor), caseback and crystal are not included.

Brand heritage

Omega was founded by Louis Brandt in La Chaux-de-Fonds in 1848 and moved to Biel/Bienne, Switzerland, in 1880. In the 1940s Omega built its 28.10 RA / 330-350 series "bumper" automatics, in which the half-rotor swings between two springs, before the full-rotor 470/500 series of the 1950s. The cal. 351 is the 17-jewel, centre-seconds member of this family, used in Omega and early Seamaster automatics.

Why this one is special

• Genuine Omega cal. 351 bumper automatic, signed and serial-numbered on the bridge
• 17 jewels, centre seconds, circa 1948 by serial
• Comes in a 34mm stainless steel case with fancy hooded lugs and crown, a good base for a restoration
• Useful as a donor movement for other 330-354 series Omega bumpers

Specifications

• Brand: Omega (signed on movement)
• Calibre: 351 bumper automatic, 17 jewels, centre seconds
• Movement serial: 11876451 (circa 1948)
• Case: stainless steel, round, hooded curved lugs, crown fitted
• Case diameter: 34 mm (33.97 mm measured, excl. crown)
• Lug to lug: 40.7 mm

Condition

Pre-owned vintage part, sold for parts or restoration. The dial, hands, oscillating weight (bumper rotor), caseback and crystal are missing. The movement plates show tarnish and age discolouration; the case shows scratches, wear and grime from age, especially around the case edge and lugs. Not tested by us, sold as shown. Please check all photos carefully as they are part of the description.

What's included

The steel case with the Omega cal. 351 movement, crown and one strap bar, as pictured. Nothing else.

Shipping & Returns

$25 DHL Express shipping worldwide from Cairo, Egypt.
30-day returns, buyer pays return shipping.