49,450 HKD
“Deck Chronometer” Paul Ditisheim, La Chaux-de-Fonds, No. 703400, Made circa 1915. Extremely fine, silver, keyless deck and pocket chronometer watch with 52-hour power reserve and 1st Class Guillaume balance. 24’’’,matte gilt, 21 jewels, straight-line lever escapement, anibal-brassGuillaume balance with gold temperature screws, adjusted to nine positionsand isochronism, blued steel Breguet balance spring, going train jeweled tothe center with endstones on the entire escapement,index regulator.Dial and movement signed, case stamped with Ditisheim’s trademark.Diam. 65 mm. Notes The movement is inscribed: 'Paul Ditisheim La Chaux-de-Fonds, The highest Records at Kew, Teddington and Swiss Observatories'. The inscription refers to the 200-some prizes Ditisheim won at Kew and in Neuchatel. A very similar watch (No. 46874) brought him first prizes in Neuchatel in 1918 and in 1920, this watch was sold by Antiquorum, Geneva, 15/10/00, Lot 173. Another practically identical watch - the serial number 46877 - brought him a prize at Kew in 1919 for the best in temperature compensation, and another (46871) won him 1st prize in 1917. Timing Contest : Mean average daily rate +/- 0,11 Error of compensation +/- 0,08 Mean error of positions +/- 0,47 Thermal coefficient - 0,003. Anibal (acier au nickel pour balanciers) An alloy invented by Dr. Charles Edouard Guillaume which exhibits unusual properties, both in terms of thermal expansion and changes in elasticity. Its properties are very
Auctioneer:
Antiquorum
Date:
2005-07-10
