Vacheron Constantin Traditionnelle tourbillon perpetual calendar

The Traditionnelle tourbillon perpetual calendar (reference 6300T/000P-H056) is a 42mm round platinum case model with a white guilloché dial and sapphire crystal. It is powered by the automatic Vacheron Constantin calibre 2162 QP/270, offering 72 hours of power reserve and functions including a tourbillon, perpetual calendar with date, weekday, month and year indications, and small seconds, viewable through a display back. The case is water-resistant to 30 metres and carries the Poinçon de Genève, the hallmark introduced by the Republic and Canton of Geneva in 1886 to certify quality craftsmanship and reliability in fine watchmaking. This reference is issued as a limited and special edition.