细节
A silver open faced keyless lever chronograph pocket watch, Omega, circa 1920,
white enamel dial with Roman numerals, inscribed Cadran, Brevete S.G.D.G., seconds ring divided into fifths, subsidiary minute recording dial, outer coloured timing scales, frosted gilt movement, bimetallic compensation balance with micrometer adjustment to the regulator, plain case signed Omega, diameter 58mm.
white enamel dial with Roman numerals, inscribed Cadran, Brevete S.G.D.G., seconds ring divided into fifths, subsidiary minute recording dial, outer coloured timing scales, frosted gilt movement, bimetallic compensation balance with micrometer adjustment to the regulator, plain case signed Omega, diameter 58mm.