Swiss 18 carat gold open faced gentlemen’s watch Circa 1910

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A Swiss 18 carat gold open faced keyless pocket watch made by Vacheron Constantin SA in Geneva, circa 1910. The adjusted Swiss lever movement with wolf’s tooth winding. White enamel dial with black Arabic hours, an outer minute track, outermost red Arabic five minute numerals, sunk subsidiary seconds at 6 o’clock and spade hands. A polished case. Dial and case signed, movement signed and numbered.