Swiss gold and enamel open faced keyless watch Circa 1915

Gold lever watch with guilloché dial
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A slim yellow gold and enamel open faced keyless watch, circa 1915. Jewelled lever movement, gilt guilloché dial, silvered chapter ring, Roman numerals, gold case, bezel with translucent grey enamel over an engine-turned ground highlighted with white enamel bands, back with translucent grey enamel over engine-turned decoration centred by a portrait of the Roman soldier in profile, edged by laurel wreath decoration, movement and dial signed.
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Diameter: 47 mm
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Signed: Movado  Chaux de Fonds