Important Collectors' Wristwatches, P...

Geneva, May 08, 2010

LOT 339

B. Haas Jne & Cie Doubl e-Dialed with Moonph ases and Gravitational Cover Locking Attributed to B. Haas Jne & Cie, Genève - Paris, No. 15297. Made circa 1890. Very fine and rare, 18K pink gold hunting-cased, doubledialed, pocket watch with moon phases, double date calendar and special gravitational locking device for the covers.

C. Three-body, bassine et filets, polished. D. White enamel on the front with radial Roman numerals, outer minute track and Arabic five-minute numerals, subsidiary seconds, large inner moon phase aperture with lunar calendar on the edge. Gold spade hands. Annular white enamel rear dial with black Arabic chapter on the border for the dates, inner days of the week, the center exposing the movement. M. 44.7 mm., 18''', nickel-plated, fausses cotes decoration, 18 jewels, counterpoised straight-line lever escapement, cut bimetallic balance, Breguet balance spring, index regulator. Diam. 53 mm.