Swiss silver Art Nouveau keyless lever pocket watch Circa 1900

Silver, pink gold and enamel watch by Omega
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A fine Swiss, silver, pink gold and enamel Art Nouveau keyless pocket watch, circa 1900. A polished case, the back cover decorated with a stylized poppy in rose gold, and the front bezel with a dark enamel Art Nouveau motif. Hinged silver cuvette engraved Grand Prix, Paris 1900. White enamel dial with Arabic numerals, subsidiary seconds. Blued steel spade hands. A matte gilt movement, straight-line lever escapement, cut bimetallic compensation balance, blued steel Breguet balance spring, index regulator. Dial, case and movement signed.
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Diameter: 48 mm
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Signed: Omega  Swiss
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The case is slightly worn.