12,075 CHF
"Medical Chronograph - Chronomètre 1st Class" Ulysse Nardin, Locle & Genève, No. 16108, case No. 360325, made in 1927 for the South American market. Very fine 18K gold lever chronometer keyless pocket watch with single button chronograph, 30-minute register, pulsometer, gold chain, seal, fitted case, spare crystal and original Ulysse Nardin certificate. Accompanied by duplicate of Bulletin Marche de l’Observatoire Astronomique e cronométique de Neuchâtel. Four-body, "bassine", polished, chronograph button in the crown. hinged gold cuvette dedicated to Dr. CharlesPettanel. White enamel, Breguet numerals, outer scale graduated for 30 pulsations, 1/5th second chronographscale and concentric minutes scale, Arabic five minute/second numerals, subsidiary seconds at 6 and 30-minuterecording dial at 12. Gold "spade" hands. Notes The Observatory Certificate records the following results: mean error for 6 positions: 2.19; compensation error by degree: 0.112; change of rate with change of position: 2.54. The more complicated a timepiece is, the more difficult it is to adjust, particularly as concerns complications such as a chronograph, split-seconds function, and/or a register. The additional wheelwork affects the timepiece's functioning, because of the amount of energy required - but often only sporadically, when, for example, the chronograph is in use - and because of the friction to which the moving parts of the mechanism - levers, springs, etc. - are subjected. It is t
Auctioneer:
Antiquorum
Date:
2005-05-15
