Vacheron Constantin Patrimony retrograde day-date

The Patrimony retrograde day-date (reference 4000U/000P-H003) is a member of the Patrimony collection, housed in a round 42.5mm platinum case with a salmon dial and sapphire crystal. It carries the Poinçon de Genève, a hallmark established in 1886 by the Republic and Canton of Geneva to certify watchmaking quality and provenance. The watch runs on the automatic Vacheron Constantin calibre 2460 R31R7/3, offering 40 hours of power reserve, retrograde day and date displays, chronometer certification, and a display case back. Water resistance is rated to 30 metres.