Swiss 18 carat gold complicated pocket watch Circa 1900

Gold complicated lever watch by Volta
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A Swiss 18 carat gold hunting cased minute repeating triple calendar keyless lever chronograph with moon phases, circa 1900. Frosted gilt finished movement, bimetallic compensation balance, minute repeating on two steel gongs with two polished steel hammers, glazed cover to the movement. Engraved gold cuvette. White enamel dial with Arabic numerals, outer minute track, two subdials for date, small seconds with moon phases, two apertures for the day and month in French, fine pierced gold hands. Plain case, chronograph and repeating operated by two buttons in the band. Case and cuvette signed and numbered.
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Diameter: 62 mm
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Signed: Volta