ULYSSE NARDIN ''CHRONOMETRO MEDICAL''
YELLOW GOLD
Locle & Genève, "Chronometre", No. 200789, case No. 339545.
Made circa 1915.
Very fine and rare, keyless, 18K yellow gold pocket watch with
oval button split-seconds chronograph, instantaneous 30-minute
register and Guillaume balance
Four-body, "bassine", polished. Hinged gold cuvette.
White enamel with Roman numerals, outermost chronograph
ring with pulsometer scale graduated for 30 pulsations, subsidiary
seconds dial at 6, 30-minute register at 12. Black steel spade hands.
Cal. 19''', rhodium-plated, fausses cotes decoration, 30 jewels,
straight-line lever escapement, anibal-brass Guillaume balance,
blued steel Breguet balance spring, swan-neck micrometer regulator,
visible chronograph mechanism.