In 2002 Vacheron & Constantin made 3 unique watches for the luxury jeweler DeBoulle of Dallas one platinum one yellow gold and one pink gold. The watches all had minute repeating perpetual calendar functions in a 40 mm diameter Patrimony design case with straight lugs and Roman numeral dials. This example offered is the platinum version manufactured and offers a unique attractive design with the combination of guilloche silvered Roman dial white gold hand engraved moon phase and 40 mm case with straight lugs working surprisingly well together.