A gold open faced keyless lever pocket watch, Zenith, circa 1920,

細節
A gold open faced keyless lever pocket watch, Zenith, circa 1920,
18k, white enamel signed Zenith, Arabic numerals, subsidiary seconds, blued steel moon hands, frosted gilt movement jewelled to the third and with compensation balance, signed gold cuvette, rubbed engine turned case, diameter 43mm.