Swiss 18K gold rose gold open faced chronograph Circa 1901

Gold chronograph
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A fine Swiss 18 carat rose gold open faced keyless pocket watch with chronograph made by Patek Philippe in Geneva, circa 1901. The movement with a lever escapement. White enamel dial with Arabic hours, an outer minute track with concentric fifths of a second divisions, outermost Arabic five minute numerals, sunk subsidiary seconds at 6 o’clock, a blued chronograph hand and gold spade & whip hands. A plain case with the monogram ED on the back. Dial signed, case and movement signed and numbered. Comes with an Extract from the Archives.
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Diameter: 50 mm
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Signed: Patek, Philippe & Cie Genève