Swiss gold dress pocket watch with champagne dial Circa 1920

Gold open faced lever
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A very fine Swiss 18 carat yellow gold keyless dress pocket watch, circa 1920.
A polished case, curved bezel, concealed hinged gold case back. Champagne dial with painted black Arabic numerals, outer minute track and blued steel art deco hands.  Rhodium-plated movement, Geneva striping decoration, stamped with the seal of Geneva quality mark, 18 jewels, wolf’s tooth winding, straight-line lever escapement, cut bimetallic compensation balance with eight adjustments, blued steel Breguet balance spring, index regulator. Dial, case and movement signed.
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Diameter: 44 mm
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Thickness: 6 mm
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Signed: Patek Philippe & Co  Geneva