Swiss 18K gold, enamel, and diamond-set watch Circa 1907

Yellow gold, enamel, and diamond-set watch
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A Swiss yellow gold, enamel, and diamond-set open faced watch, made in 1907, lever escapement.
White enamel dial, Dauphine numerals, Louis XVI hands, 18k yellow gold bassine case, guilloché case back with translucent slate-grey painted enamel with rose-cut diamond ornaments,cuvette with monogram engraving, case, dial, and movement signed.
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Diameter: 27 mm
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Signed: Patek Philippe  Genéve
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Accompanied by an Extract from the Archives confirming date of sale in 1908.