Omega: a mid-century stopwatch

Omega: a mid-century stopwatch Olympic model, 1960s, coated metal case, manual wind, round black dial with Arabic numerals in white, sunken 30 minute register at 12, sunken small seconds at 6, raised outer running seconds track in white with Arabic numerals in black, central winder flanked by stop-start push button and screw-down hold button, in box, with carry case Dimensions:Case: 64.5mm Provenance: Property of a retired official timekeeper. See lyonandturnbull.com for the full article.