Swiss 18 carat yellow gold keyless pocket watch Circa 1910

Gold open faced lever pocket watch 
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A fine Swiss 18K yellow gold, open faced keyless pocket watch, circa 1910. Patek Philippe & Cie., Genève, retailed by Shreve & Co. A polished case, case back with initials JLS. Enamel dial with black Arabic numbers, outer minute track, sunken subsidiary seconds. Blued steel Breguet hands. A rhodium-plated movement, Geneva striping decoration, 20 jewels, straight-line lever escapement, eight adjustments, cut bimetallic compensation balance, blued steel Breguet balance spring, micrometre with swan’s neck regulator. Dial, case and movement signed.
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Diameter: 47,5 mm
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Signed: Patek Philippe & Cie.  Genève