Vacheron Constantin’s Les Cabinotiers Minute Repeater Perpetual Calendar

Beating at the heart of the unique Les Cabinotiers Minute repeater perpetual calendar - A perfect combination models is Vacheron Constantin’s 1731 QP caliber. In reference to Jean-Marc Constantin's birth year, this now iconic minute repeater movement renowned for its extreme slenderness is inspired by the Maison’s historical achievements. The difficulty here lay in adding a perpetual calendar to the 1731 caliber while maintaining a total thickness of just 5.70 mm, as well as ensuring precision, reliability and user friendliness. The calendar indications are arranged in a classically elegant manner, positioned at the top of the sunray guilloché dial so as to leave the necessary space for the golden moon set against a starry sky background. The control system for the minute repeater function on the left side of the 42 mm diameter case hints at the true complexity involved in crafting these models.