Vacheron Constantin Patrimony moon phase retrograde date

The Vacheron Constantin Patrimony moon phase retrograde date, reference 4010U/000G-H070, has a white gold case measuring 42.5 mm across and 9.7 mm thick. The self-winding calibre 2460 R31L/1 drives the movement, carries the Hallmark of Geneva, and offers 40 hours of power reserve. A sapphire crystal covers the silver dial, and a transparent sapphire caseback allows a view of the finishing inside. The dial combines a retrograde date with a precise moon phase display, two complications rarely paired this cleanly on a dress watch, alongside central seconds. Alligator leather in green forms the strap, closed with a white gold pin buckle. Water resistance is modest at 30 metres, in keeping with a watch built for the wrist rather than the water.