Swiss gold minute repeating chronograph watch Circa 1904

Gold repeating chronograph by Vacheron & Constantin
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A Swiss 18 carat gold minute repeating open faced keyless chronograph watch, circa 1904. Jewelled nickel lever movement, cut bimetallic compensation balance, swan neck regulator, minute repeating on two gongs activated through a slide in the band. 18 Carat gold engraved cuvette. White enamel dial, Breguet numerals, outer rail track calibrated for 1/5 of seconds,  two sunken subsidiary dials for 30 minute register and constant seconds. Plain polished case, chronograph operated through the crown. Case, dial, cuvette and movement signed.