Very fine Swiss gold open faced lever pocket watch Circa 1910

Gold keyless lever by Patek Philippe
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A very fine Swiss 18 carat gold open faced keyless lever pocket watch, circa 1910. Sold February 15th, 1923. Rhodium plated, 18 jewels, straight-line lever escapement, cut bimetallic compensation balance, Breguet balance spring. Gold hinged cuvette with inscription. Guilloché champagne coloured dial, white enamel cartouches with Breguet numerals, outer enamel minute track, subsidiary seconds dial and original blued steel Breguet hands. Polished case, back with monogram, reeded concave bezel. Dial, case and movement signed, case numbered. Accompanied by the Extract from the Archives.
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Diameter: 46 mm
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Thickness: 9 mm
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Signed: Patek, Philippe & Co Geneva, Switzerland