04.10 Seamaster Bumper Omega Seamaster Calendar Bumper 2627-8 SC Omega Seamaster Calender, arabic index, patina dial, bumper movement caliber 355, 17 jewels, 19800 bph, ref 2627-8SC, circa 1953.
19.39 Seamaster Bumper Omega Seamaster Rose Gold C2577-3SC Omega Seamaster, caliber 354, 17 jewels, 19800bph, ref C 2577-3 SC, circa 1952.