Louis Cartier created the Tank watch in 1917. A legend was born. The lugs blend seamlessly into the bare edges of the flat vertical brancards, giving the watch its unique aesthetic. The clean, crisp lines have proved hugely popular with a free-spirited, elegant clientèle. The now-iconic Tank watch has inspired countless variations, yet managed to preserve its distinctive identity. Tank Must watch, extra-large model, Manufacture mechanical movement with automatic winding, caliber 1847 MC. Steel case, beaded crown set with a synthetic cabochon-shaped spinel, silvered flinqué dial, blued-steel sword-shaped hands, interchangeable black grained calfskin strap, interchangeable steel deployant buckle, calendar aperture at 6 o'clock.