Cartier Tank à Vis "Wandering Hours" CPCP ref 2553This 18k gold reference 2553 Tank Vis from the Collection Prive Cartier Paris (CPCP) line features a wandering hours complication. This cool and creative way of displaying the time was first developed in the 1600s by the Campani brothers in a clock for the Pope ! The mechanism allows the time to be read of rotating discs as opposed to the traditional hands that circle the dial. This lovely Tank features a rectangular 18k yellow gold case, measuring 40