Important Collectors’ Wristwatches, P...

New York, The Grand Havana Room, Sep 20, 2006

LOT 37

?Bulletin 1st Class Lever Chronometer? Ulysse Nardin, Locle & Genève, ?Chronomètre?, No. 20419, case No. 338570. Made circa 1920. Very fine, hunting cased, keyless, 18K yellow gold lever pocket chronometer. Accompanied by the original rating certificate.

C. Four-body, ?bassine?, solid, entirely engine-turned, the front cover with a monogram, back cover inside with dedication dated 1924, hinged gold cuvette inscribed ?Bulletin de 1ere Classe de l?Observatoire Astronomique de Neuchâtel?. D. White enamel with painted Breguet numerals, outer minute track, subsidiary seconds dial. Blued steel ?spade? hands. M. Cal. 20, rhodium-plated, ?fausses-côtes? decoration, 19 jewels partially in screwed gold châtons, straight line lever escapement, cut bimetallic compensation balance with gold screws, blued steel Breguet balance spring, sapphire endstones, ?swan-neck? micrometer regulator. Dial, case and movement signed. Diam. 54 mm.