The first Tank watch design originated in 1917 as a tribute to allied forces in Europe, the links of the metal bracelet referring to their powerful tracked vehicles. The Cartier Tank Francaise Two Tone features a stainless steel case. The silvered guilloche dial includes Cartier signature blued sword shaped hands, roman numerals and the blue sapphire cabouchon. The stainless steel bracelet is highlighted with 18ct yellow gold links.