Challenge Twin-Time Cvstos

Challenge Twin-Time Cvstos, Geneve, "Challenge Twin-Time Automatic", No. 035/59- 01RG. Made circa 2007. Fine and unusual, large, curved tonneau-shaped, self-winding, water-resistant, 18K pink gold wristwatch with twin mean time dials for two time zones, center-seconds, large date, black plasma treated movement, palladium and titanium alloy rotor, date display and a black rubber Cvstos bracelet with 6 pink gold sections and an 18K pink gold double deployant clasp. Two-body, brushed and polished, the sides with recessed slotted decoration, hooded lugs with screwed bars, titanium screwed-down crown, transparent back with four screws, nonreflective sapphire crystals. Sapphire crystal with applied steel indexes, luminous dots and divisions for the minutes on a black outer reserve, Arabic numerals on the sapphire crystal, Arabic five second numerals on the outer frame, subsidiary dial for the second meantime display, visible black date discs displaying the date in an aperture. Luminous polished steel skeleton hour and minute hands, red-tipped seconds hand. Cal. 551, black plasma treated, straight-line lever escapement, monometallic balance, self-compensating flat balance spring, shock absorber, micrometer regulator, palladium and titanium alloy rotor, hack mechanism. Dial and case signed. Dim. 51 x 41 mm. Thickness 17 mm.