Tank Louis Cartier watch, large model, Cartier 1917 MC workshop refined manual winding mechanical movement. 750 ‰ rose gold case, round bead crown, inlaid with a convex round sapphire, silver plated round bead dial, sword shaped blue steel hands, mineral crystal mirror, semi matte brown crocodile leather strap, 750 ‰ rose gold needle buckle clasp. Case size: 33.7 x 25.5 millimeters, thickness: 6.6 millimeters. Waterproof depth of 3 bar (30 meters).