Important Collectors' Wristwatches, P...

New York, Mar 05, 2009

LOT 302

Challenge Chrono Cvstos, Geneve, "Challenge-R 50, Chronograph Automatic," No. 212 ST. Made circa 2007. Fine and unusual, large, curved tonneau-shaped, self-winding, water-resistant, stainless steel wristwatch with date, square button chronograph, registers, power-reserve indication, black plasma-treated movement, palladium and titanium alloy rotor and a black rubber Cvstos strap with stainless steel double deployant clasp. Accompanied by a fitted box and papers.

C. Three-body, brushed and polished, the sides with recessed slotted decoration, hooded lugs with titanium screwed bars, titanium screwed-down crown and titanium chronograph buttons, transparent back with four screws, non-reflective sapphire crystals. D. Transparent with applied steel indexes, luminous dots and divisions for the minutes on a black outer reserve, subsidiary ring dials for the seconds, 30-minute and 12-hour registers, sector for the power reserve indication, visible skeletonized black date ring displaying the date beneath a cyclops lens. Luminous polished steel épée hands, red subsidiary hands. M. Cal. 557, black plasma treated, 25 jewels, straight-line lever escapement, monometallic balance, self-compensating flat balance spring, shock absorber, micrometer regulator, palladium and titanium alloy rotor. Dial and case signed. Dim. 51 x 58 mm. Thickness 17 mm.