Swiss 18 carat gold open faced lever pocket watch Circa 1912

Gold open faced lever by Patek Philippe
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A Swiss 18 carat gold keyless wind open faced Patek Philippe gentlemen’s pocket watch, circa 1912.
18 carat gold plain case. Precision lever movement, balance with big gold screws, fine adjusting device and wolf’s toothing, Patek Philippe patent from 13.01.1891, patent punched on bridge, Geneva striping. White enamel dial, black Arabic numerals, black outer minute track, subsidiary seconds at 6 and blued steel spade hands. Case, movement and dial signed.
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Diameter: 48 mm
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Weight: 78 g
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Signed: Patek Philippe & Cie Genève