Swiss rose gold Chronometro Gondolo with 24h dial Circa 1909

Rose gold open faced keyless lever by Patek Philippe
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A fine, rare Swiss 18 carat rose gold open faced keyless lever Chronometro Gondolo with 24 hour dial, circa 1909. Retailed by Gondolo & Laboriau, Relojoeiros, Rio-de-Janeiro. Sold on Sept. 27th, 1909. Gilt brass movement, 21 jewels, straight-line lever moustache escapement, cut bimetallic compensation balance, blued steel Breguet balance spring, patented index micrometer regulator, gold wheel train, wolf’s tooth winding. Gold hinged cuvette. White enamel dial with Arabic numerals, red 6-12-18-0 (24), outer minute track, subsidiary seconds dial and original gold feuille hands. Dial, case and movement signed. Engine turned case, foliate monogram to the back. Accompanied by a Patek Philippe fitted box and the Extract from the Archives.
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Diameter: 56 mm
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Signed: Patek, Philippe & Cie Genève Chronometro Gondolo