and a winding crown topped with a blue sapphire (or in rare cases, ruby) cabochon. “I don't think there's any watch more ...

Many watch aficionados consider Cartier’s Tank to be the most important timepiece ... and tilt to circumscribe the outer rim, while two blue hands trace the chemin de fer – the train track ...

In fact, this Tank Louis Cartier may just be my new grail watch. It’s a numbered limited edition of 100 ... drawing attention to the deep blue of the sapphire cabochon in the crown and its blued-steel ...

Created in 1917 by Louis Cartier, the watch’s design reflected the view from above of a World War I tank, with a rail-track ...