Ulysse Nardin, Locle Suisse "Chronomètre", Movement No. 127399, Case No. 671285, 65 mm, 247 g, circa 1950

A deck chronometer with split tenth of a second chronograph with a device for the electromechanical release of the chronograph
Case: steel, polished, steel dome, screw back. Dial: enamel, signed, numbered, Arabic numerals, auxiliary seconds, blued Breguet hands. Movm.: 2/3 plate movement, rhodium-plated, "fausses côtes" decoration, finely ground, bevelled chronograph steel parts, ratchet wheel, ground double hand tong with polished bevelling, separate ratchet wheel for split seconds chronograph, screw compensation balance, cam type fine adjusting device, pink gilt train.