Swiss silver and pink gold keyless lever pocket watch Circa 1909

Silver watch Made for Gondolo & Labouriau
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A rare Swiss silver and pink gold keyless pocket watch, circa 1909. Made for Gondolo & Labouriau, Relojoeiros, Rio-de-Janeiro. A polished bezel and band, engine turned back, pink gold hinges, collar and hand-setting button and a hinged silver cuvette. White enamel dial with radial Roman numerals, outer Arabic minute track sunk subsidiary seconds and gold spade hands. A gilt brass movement, 15 jewels, wolf’s tooth winding, straight-line lever escapement à moustaches, cut bimetallic compensation balance, blued steel Breguet balance spring with overcoil, index regulator. Dial, case, cuvette and movement signed.
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Diameter: 53 mm
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Signed: Patek Philippe & Cie  Genève
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The case is slightly scratched.
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On May 1st, 1839 the Polish businessman and aristocrat Antoine Norbert Count de Patek and the Polish watchmaker Franciszek Czapek founded a company in Geneva named Patek, Czapek & Cie. Czapek lived in Switzerland since 1832 and changed his name to François Czapek when he became nationalized. The company ran well but each went their own way in 1844 and set up their own company: Czapek & Cie which continued till 1869 and Patek & Cie. 1844 Patek met the French watchmaker Jean-Adrien Philippe at the Paris World’s Fair. Philippe had already enriched the watch’s history with one of its most revolutionary inventions: the crown winding. Since then watches needed no longer to be wound with an additional key, but both the winding and the time adjustment of the hands could now be performed much easier by the crown. On May 15^th, 1845 Jean-Adrien Philippe and Vincent Gostkowski entered the company. In the same year, a patent for a watch with a winding stem and hand adjustment mechanism was applied. They produced the first watch with a minute repeater. On January 1^st, 1851 the company’s name was changed to Patek, Philippe & Cie.