Important Collectors’ Wristwatches, P...

Geneva, Mandarin Oriental Hotel Du Rhône, Oct 15, 2006

LOT 158

Yellow Gold "Tri-Compax" Universal, Genève, "Tri-Compax". Made circa 1950. Fine and rare, large, astronomic, 18K yellow gold, gentleman's wristwatch with square button chronograph, registers, triple date, moon phases, tachometer and an 18K yellow gold Universal buckle.

C. Three-body, polished, inclined bezel, curved lugs. D. Matte silver with applied yellow gold Arabic and bâton indexes, outer minutes and fifths of a second track with Arabic five minute/second numerals, concentric blue tachometer scale, subsidiary dials for the seconds, the 12-hour and 30-minute registers, graduation for the date around the moon phase aperture, apertures for the days of the week and the months. Blued steel "feuille" hands. M. Cal. 287, frosted gilt, 17 jewels, straight-line lever escapement, monometallic balance, self-compensating Breguet balance spring, index regulator. Dial, case and movement signed. Diam. 37 mm. Thickness 13 mm.