OMEGA Seamaster Automatic Bumper - Reference 2577. - Lot 24

OMEGA Seamaster Automatic Bumper - Reference 2577. Steel wristwatch with automatic winding. Round steel case, smooth bezel, fluted crown, Seamaster-engraved screw-down caseback. Grey dial with cream border, applied yellow spike and round hour markers, Arabic numeral markers at 12 o'clock, painted black baton minute track and Arabic numerals, grey dauphine hands, black central baton seconds, painted logo. Movement: mechanical self-winding "bumper". Caliber 354 - Numbered 13864932 (circa 1953). Case, dial and movement signed. Black leather strap with Omega buckle. Case dimensions: 34 mm. This watch features a mechanism that contributed to the development of self-winding calibers with oscillating weight. The principle of the bumper caliber is similar to that of an automatic movement with oscillating weight: a weight subjected to gravity oscillates to wind the movement. This technology was patented by British watchmaker John Harwood. However, it does not perform a complete rotation, as springs strike the mass to continuously return it.