Fine Swiss 18k gold keyless dress watch Circa 1930

Gold open faced lever dress watch 
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A very fine, thin Swiss, 18K yellow gold keyless dress watch, circa 1930. A solid, polished case. Satiné silver dial with applied yellow gold Breguet numerals, outer dot minute divisions, subsidiary seconds dial. Yellow gold Breguet hands. A rhodium-plated movement, Geneva striping decoration, 18 jewels, straight-line lever escapement, cut bimetallic balance, blued steel Breguet balance spring, micrometre regulator. Dial, case and movement signed.
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Diameter: 44 mm
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Signed: Patek Philippe & Cie  Genève
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The case has some scratches and the dial is slightly oxidized