The Longitude at the Eve of the Third...

Geneva, Hotel Des Bergues, Oct 23, 1999

LOT 290

Dubois à Genève, circa 1890.Fine 18K pink gold keyless moon phase astronomical watch with chronograph and triple digital calendar, in original black leather fitted box.

C. Four body, massive, "pomme et gouge", polished, the back with the champlevé enamelled monogram"J. B." Hinged gold cuvette. D. White enamel with Roman numerals, outer Arabic minute and chronograph rings, sunk subsidiary seconds with inner moon phase aperture, subsidiary single aperture for the digital day, date and month volvelles. Gilt brass "Louis XV" hands. M. 19''', nickel plated, "fausses côtes" decoration, 23 jewels, counterpoised straight line lever escapement, cut bimetallic balance, Breguet balance spring. Chronograph with visible work, button on the winding crown.Signed on the cuvette.Diam. 53 mm.