Christian Pfeiffer-Belli Die Federchronometerhemmung Patek, Philippe & cie, Genève, No. 65 852 Open-faced, key winding and setting, with the – Power reserve indication (sector at 12 o’clock) silver case, yellow gold pendant neck, hinge and lip White enamel dial, painted Roman numerals, Gold Poire hands; blued steel counterpoised Movement 20’’’, ¾ plate, Piguet Frères ebauche, nickeled, with fusee and chain, 32-hour power reserve, spring detent escapement, cranked compensation balance with gold timing screws, isochronous helical balance spring with terminal curves, diamond endstone, adjusted by master Delivered on May 29, 1885, to H. Müller & Co., Patek Philippe agents in Shanghai. This watch’s movement was probably made using an ebauche from the Victorin Piguet & Fils workshop, purchased on July 7, 1884. The chronometer was finished on May 27, 1885. It is one of a very few pocket chronometers with fusee and chain ever produced by the company; three are currently known to exist: – No. 3228, with pivoted detent escapement (Inv. P-1332, movement only). – No. 65 852, with spring detent escapement (the above watch). – No. 65 859, with spring detent escapement (Inv. P-1058, p. 69, watch with several horological complications). 13a 55 mm / thickness 17.4 mm 13a Patek, Philippe & cie, Genève, No. 65 852 Patek, Philippe & cie, Genève, No. 65 852 Open-faced, key winding and setting, with the Open-faced, key winding and setting, with the following complication: following complication: – Power reserve indication (sector at 12 o’clock) – Power reserve indication (sector at 12 o’clock) silver case, yellow gold pendant neck, hinge and lip silver case, yellow gold pendant neck, hinge and lip White enamel dial, painted Roman numerals, White enamel dial, painted Roman numerals, subsidiary seconds dial at 6 o’clock subsidiary seconds dial at 6 o’clock Gold Poire hands; blued steel counterpoised Gold Poire hands; blued steel counterpoised seconds hand seconds hand Movement 20’’’, ¾ plate, Piguet Frères ebauche, Movement 20’’’, ¾ plate, Piguet Frères ebauche, nickeled, with fusee and chain, 32-hour power nickeled, with fusee and chain, 32-hour power reserve, spring detent escapement, cranked reserve, spring detent escapement, cranked compensation balance with gold timing screws, compensation balance with gold timing screws, isochronous helical balance spring with terminal isochronous helical balance spring with terminal curves, diamond endstone, adjusted by master curves, diamond endstone, adjusted by master adjuster Alexis Favre (1885) adjuster Alexis Favre (1885) 1884 –1885 1884 –1885 146 Delivered on May 29, 1885, to H. Müller & Co., Delivered on May 29, 1885, to H. Müller & Co., Patek Philippe agents in Shanghai. Patek Philippe agents in Shanghai. This watch’s movement was probably made This watch’s movement was probably made using an ebauche from the Victorin Piguet & Fils using an ebauche from the Victorin Piguet & Fils workshop, purchased on July 7, 1884. The workshop, purchased on July 7, 1884. The chronometer was finished on May 27, 1885. chronometer was finished on May 27, 1885. It is one of a very few pocket chronometers with It is one of a very few pocket chronometers with fusee and chain ever produced by the company; fusee and chain ever produced by the company; three are currently known to exist: three are currently known to exist: – No. 3228, with pivoted detent escapement – No. 3228, with pivoted detent escapement (Inv. P-1332, movement only). (Inv. P-1332, movement only). 13a – No. 65 852, with spring detent escapement (the – No. 65 852, with spring detent escapement (the above watch). above watch). – No. 65 859, with spring detent escapement – No. 65 859, with spring detent escapement (Inv. P-1058, p. 69, watch with several horological complications). (Inv. P-1058, p. 69, watch with several horological complications).