Fine Swiss 18K yellow gold keyless dress watch Circa 1920

Gold open faced pocket watch
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A fine and elegant Swiss 18 carat yellow gold open faced keyless dress watch made by Patek Philippe in Geneva, circa 1920. Retailed by Beyer in Zürich. Champagne coloured dial with Breguet hour numerals, an outer minute track, sunk subsidiary seconds at 6 o’clock and blackened Breguet hands. A nickel movement with Geneva striping decoration, 18 jewels, straight line lever escapement, cut bimetallic compensation balance, blued steel Breguet balance spring and swan neck micrometre regulator. Dial, case and movement signed.
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Diameter: 46 mm
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Signed: Patek Philippe & Cie Genève