Omega, Seamaster, 1966, stainless steel automatic watch with date, case ref. 1660163, case, movement, crown and dial signed, with brown leather case, case diameter 1.38 in.
- Movement - The technical name for the workings of a clock or watch, and does not include the dial or case.
- Date Aperture - A date aperture is a cut out section in the face of a watch or clock, displaying the day of the month.
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