Vacheron Constantin Overseas perpetual calendar ultra-thin skeleton

The Overseas perpetual calendar ultra-thin skeleton, reference 4300V/220G-B946, is a 41.5mm round white gold watch with a blue dial and sapphire crystal. It carries the automatic Vacheron Constantin calibre 1120 QP, bearing the Poinçon de Genève hallmark established by the Republic and Canton of Geneva in 1886. The movement drives a perpetual calendar with date, month and year indications along with a moon phase display, visible through a display back. Water resistance is rated to 50 metres.