Fine Swiss 18k gold Art Deco lever dress watch Circa 1930

Gold open faced dress watch 
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A very fine and elegant Swiss, thin, keyless, 18K yellow gold Art Deco dress watch, circa 1930. Retailed by Casa Welsch, Lima, Peru. A solid, polished and brushed case. Satiné silver dial with applied yellow gold bâton indexes, outer minute divisions, guilloché subsidiary seconds dial. Yellow gold dauphine hands.
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Movement stamped with the Geneva Quality Hallmark, rhodium-plated, Geneva striping decoration, 18 jewels, straight-line lever escapement, cut bimetallic compensation balance adjusted to heat, cold, isochronism and five positions, blued steel flat balance spring, swan-neck micrometre regulator. Dial, case and movement signed.
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Diameter: 45 mm
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Signed: Patek, Philippe & Cie  Genève
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The movement is slightly scratched, and the dial is restored.