Great looking Omega Seamaster bumper automatic in stainless steel case with professionally refinished dial and freshly serviced movement. This watch dates to c1950, as determined by serial number 12851995 and has a cal 342, 17 jewel movement. The Omega case reference is 2578-2. Photos are not actual size of watch, the case measures 34 mm across (not including crown) x 42 mm lug to lug and is fit with a new leather bracelet.