VINTAGE OMEGA SEAMASTER BUMPER C2577-11SC CAL 354 No date In great condition, not polished: Seamaster is still visible in the case back The early automatic Omega caliber 354 bumper or hammer automatic All stainless steel Case back reference C 2577-11sc Size: 34 mm (without crown) 11 mm thin Created in 1952, 17 jewels Screw in case back Crystal: Armoured hesalite Strap:new leather strap Size 20 cm Full service !! Perfect working!! Shipping united states fedex 3-6 days International shipping 8-10 days Please ask if you have any questions. Thanks for looking! Note: the seller is not responsible for customs charges incurred when importing the item to your location. Return policy: NO RETURNS. Please check well, the images are quite clear, have measurements of the pulses of the dial and watch case. Preferably seeking experienced buyers who know what they are buying, we appreciate the greater honesty when purchasing and receiving shipments. No refunds. Please remember: what you buy is what you see.