Important Collectors Wristwatches, P...
Geneva, Hotel Des Bergues, Oct 20, 1991
58 Breguet No 4933, Swiss, circa 1930. Fine silver cased, keyless pocket chronometer with split- second chronograph and 60 minute instantaneous recorder, Bulletin d'Observatoire de Première Classe.
C. Three body, massive, "forme collier", polished. Silver cuvette engraved: "Bulletin de Première Classe". D. White enamel with Breguet numerals, outer Arabic minute and chronograph ring, sunk subsidiary dials for seconds and minute register. Blued-steel Breguet hands. M. 19"', nickeled 21 jewels, straight line lever escapement, brassinvar Guillaume balance, Breguet balance spring. Split-seconds chronograph with visible work, push-pieces in the band and on the crown. Additional push-piece in the band to stop the balance. Signed on the dial and the case. In very good condition with a Breguet fitted box. Diam. 53 mm.
