CASE MATERIAL: Stainless steel
CASE DIMENSIONS: 34 mm in diameter
DIAL: Black crosshair with gilt details, baton hour markers with inlaid onyx, and framed date aperture at the "3" hour marker
BRACELET MATERIAL: Original OMEGA signed beads of rice in stainless steel with #11 end links
BRACELET SIZE: 7-1/2 to 8 inches
FUNCTIONS: Time and date
In the 1950s OMEGA experimented with a number of waterproof designs for the Seamaster line. This particular case design, manufactured by EPSA, uses a gasket on the inner lip of the compression caseback. The dial has a terrific "starry night" patina and the 503 movement has a swan neck regulator.