Vacheron Constantin Traditionnelle Complete Calendar Openface

To power the Traditionnelle Complete Calendar Openface model, Vacheron Constantin has opted for the manufacture Calibre 2460 QCL/270: a more modern version of the Calibre 2450, which was the first self-winding iteration of the complete calendar entirely designed and developed in-house. In addition to its triple calendar indications – day of the week, date and month – it has a precision moon-phase display that needs adjustment only once in 122 years. The openworked dial reveals part of the 312-component self-winding mechanism. Pursuing the goal of legibility, the Maison's watchmakers and designers have chosen to display the date around the periphery of the dial using a blued hand, while the day and month are marked on sapphire discs and contrast with the blue background of the apertures.