Swiss yellow gold watch with repoussé decoration Circa 1900

Gold open faced keyless fob watch
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A Swiss yellow gold open faced keyless fob watch with repoussé decoration, circa 1900, jewelled movement with moustache lever escapement, cut bimetallic balance.
White enamel dial, Arabic numerals, outer minute track, yellow gold case, scrolling foliage engraved to the bezel, repoussécase back depicting Hercules and Omphale, dial, cuvette and movement numbered and signed.
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Diameter: 27 mm
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Signed: Patek Philippe & Cie. Genève
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With a Patek Philippe Extract from the Archives.