Franck Muller, Geneve, "Cintrée Curvex, Imperial Tourbillon Chronographe" No. 29, Ref. 7850 CC T. Produced circa 2000. Very fine and very rare, large, tonneau-shaped, 18K white gold gentleman's wristwatch with visible one-minute
Franck Muller Cintree Curvex Bireto Chronograph Automatik... for $5,603 for sale from a Trusted Seller on Chrono24
7850 CC AT Franck Muller Chronograph White Gold | Essential Watches
Franck Muller - Curvex Big Ben - Ref. Franck Muller - 7850
Bonhams : Franck Muller. A fine 18ct white gold automatic perpetual calendar wristwatch with chronographCintrée Curvex Quantième Perpétuel Biretro, Ref: 7850 CC QPB, Case no. 175, Circa 2000