Important Collectors Wristwatches, P...
Geneva, Hotel Des Bergues, Oct 20, 1991
LOT 143
Paul Ditisheim, La Chaux-de-Fonds No. 96639, circa 1925. Fine 18 ct. gold keyless pocket chronometer, awarded a First Prize at the Neuchâtel Observatory trials in 1926, in original three part mahogany box and with original illustrated and sealed certificate.
CHF 12,000 - 15,000
C. Four body massive "bassine", polished. Gold cuvette. D. Silvered with Roman numerals and subsidiary seconds. Blued-steel "pear" hands. M. 21"' frosted and gilt three-quarter plate, 21 j ewels, straight line lever escapement, brassinvar Guillaume balance, blued-steel balance spring with terminal curve. Signed on the dial and t'ae movement. In very good condition. Diam. 55 mm.
Notes
Mean daily rate: +/- 0.20
Thermal coefficient : - 0.028
Mean compensation error: +/- 0.20
Rate revovery after extremes : + 0.25
Mean daily position error: +/- 0.55
Classification number: 8.1