Patek Philippe. A fine 18K gold openface keyless lever watch with Guillaume balance and Bulletin d'Observatoire

SIGNED PATEK PHILIPPE & CO., GENEVA, SWITZERLAND, MADE FOR THE FRANK F. BONNET CO., COLUMBUS, OH., MOVEMENT NO. 146'803, CASE NO. 259'420, MANUFACTURED IN 1908

Details

Patek Philippe. A fine 18K gold openface keyless lever watch with Guillaume balance and Bulletin d'Observatoire
Signed Patek Philippe & Co., Geneva, Switzerland, Made for The Frank F. Bonnet Co., Columbus, Oh., movement no. 146'803, case no. 259'420, manufactured in 1908
Cal. 19''' nickel-finished Extra quality keyless lever movement numbered twice, 21 jewels, Guillaume balance with gold and platinum poising screws, micrometer regulator, wolf's tooth winding, gold cuvette with engraved inscription Edward Johnson May 26, 1910, the white enamel dial with Breguet numerals, outer five minute divisions, gold Louis XVI hands, subsidiary seconds, in plain circular case with engraved initials EJ to the back, case, cuvette, dial and movement signed
50 mm. diam.

Lot Essay

Accompanied by Patek Philippe Extract from the Archives confirming production of the present watch with enamel dial and Breguet numerals in 1908. It obtained the Geneva Rating certificate grade "A" on 9 August 1909 and was sold on 21 December 1909.

According to the registers of the Geneva Observatory, the watch was presented to the category A contest in June 1909 and achieved 210.9 points. Its movement was adjusted by the renowned precision adjuster H. Wehrli.

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