Vacheron Constantin Traditionnelle perpetual calendar ultra-thin

The Traditionnelle perpetual calendar ultra-thin (reference 4300T/000G-H106) is a round 36.5mm case crafted in white gold with a white dial and sapphire crystal. It is powered by the automatic Vacheron Constantin calibre 1120 QP, which bears the Poinçon de Genève, a hallmark established by the Republic and Canton of Geneva in 1886 to certify watchmaking quality and craftsmanship. The watch features a perpetual calendar with date, month, year and moon phase indications, and has a display case back.