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Auktionen Dr. Crott 91st Auction

427426* Ulysse Nardin Locle Suisse “Chronomètre”, Movement No. 200925, Case No. 652702, 54 mm, 127 g, circa 1950  A deck watch with split seconds chronograph Case: steel, polished, push back, pusher for chronograph at “11” and via crown. Dial: enamel, Arabic numerals, auxiliary seconds, 30 min. counter, blued spade hands. Movm.: 2/3 plate movement, rhodium-plated, “fausses côtes” decoration, signed, double hand indicator with ratchet wheel for split seconds, very finely ground and bevelled chronograph steel parts, ratchet wheel, “Swiss Patent 54714”, pink gold train, gold screw compensation balance, index spring fine adjusting device. Ulysse Nardin Locle Suisse “Chronomètre” 瑞士 — 觀測時計,附追 針計時碼錶 40963  C: 2 D: 2 M: 2, 41  2.900 - 4.000 EUR 3.200 - 4.400 USD 26.100 - 36.000 HKD Paul Ditisheim, La Chaux de Fonds - “Maker to the US Navy. Grand Prix Paris 1900”, Movement No. 36119, Case No. 36119, 63 mm, 220 g, circa 1910  A heavy deck watch Case: silver, reeded band, polished. Dial: matt silvered, signed, radial Roman numerals, auxiliary seconds, blued spade hands. Movm.: 2/3 plate movement, type II, frosted, gilt, Guillaume screw compensation balance, blued Breguet balance spring with 2 terminal curves by Phillips, sapphire endstone on balance, lever and escape wheel. Paul Ditisheim (1868-1945) Ditisheim was one of the most famous Swiss maker of watches and chronometers, who did most of his research and his publications in the field of precision timekeeping. He did his apprenticeship at the watchmaking school in La Chaux-de-Fonds, before working in Ponts-de- Martel, Berlin, Paris, and Rotherham (near Coventry). In 1892 he opened up a watchmaking factory in La Chaux-de-Fonds. He presented his watches in many exhibitions and was very sucessful in designing pocket chronometers, usually with lever escapement. He developed for example a navy chronometer with exchangeable escapement system. Ditisheim and Charles-Edouard Guillaume worked together in developing and testing of temperature-independent metal alloys. Source: Ghul Uhren Lexikon Paul Ditisheim, La Chaux de Fonds - “Maker to the US Navy. Grand Prix Paris 1900” — 厚實的觀測時計 40726  C: 2 D: 2 M: 2, 41, 51  9.500 - 13.000 EUR 10.500 - 14.400 USD 85.500 - 117.000 HKD

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