Cartier Basculante 2391 Guilloché Dial in 18k Yellow Gold Millennium Limited EditionThe Tank Basculante was introduced in 1932, at a time when men required a wristwatch that could be protected during pursuits such as hunting or playing polo. The tilting action of the Tank Basculante is closely related to that of Jaeger LeCoultres Reverso, which was released around the same period. In fact, Jaeger LeCoultre manufactured the Basculante cases for Cartier during that era. Like the Reverso, the Tank Basculante was designed to be flipped