In the late 1990s, Cartier's Privée Collection Paris introduced a modernized version of the Tank Étanche, known as the Tank à Vis, offering three complications: time-only, wandering hours, and dual time. This present lot is the wandering hours variation, certainly the most mechanically interesting out of the three, which features a creative time display method developed by the Campani brothers in the 1600s for the Pope's clock. The mechanism displays time using rotating discs instead of traditional hands, which is both visually appealing and mechanically intriguing. The curved aperture at 12 o’clock shows the wandering hours disc, while the minutes are indicated by a blued central hand. Powered by the ultra-thin calibre 9902MC, it is beautifully decorated and visible through a display case back.

Numbered 58 and encased in white gold, the timepiece features a dial that is engine-turned with a beautiful rosette flower motif, the symbol for watches from the limited Cartier Paris Collection Privée (CPCP) line, the present lot is preserved in excellent overall condition and is a superb quirky yet fun addition to your collection.