VACHERON AND CONSTANTIN. AN 18 CARAT GOLD AND ENAMEL OPENFACE KEYLESS LEVER CHRONOGRAPH WATCH

VACHERON AND CONSTANTIN. AN 18 CARAT GOLD AND ENAMEL OPENFACE KEYLESS LEVER CHRONOGRAPH WATCH
signed vacheron and constantin, geneve, circa 1890

With gilt-finished jewelled lever movement, bi-metallic compensation balance, micrometer regulator, 18 carat gold cuvette, the white enamel dial with Breguet numerals, outer calibrated tachometer ring, two subsidiary dials indicating constant seconds and 30 minute register, the circular case with blue enamel monogram to the reverse, chronograph button in the crown, case, dial and movement signed.
48 mm. diam.