Vacheron Constantin Overseas perpetual calendar ultra-thin

The Overseas perpetual calendar ultra-thin, reference 4300V/220R-H144, is fitted with a 41.5mm round rose gold case and sapphire crystal. Its gold dial displays date, month, year and moon phase functions driven by the automatic Vacheron Constantin calibre 1120 QP/1. The movement carries the Poinçon de Genève, a hallmark introduced by the Republic and Canton of Geneva in 1886 to certify quality craftsmanship and reliability in fine watchmaking.