Malte Perpetual Calendar Chronograph 47112/000P-8915 With Extract - Platinum case on leather strap with Vacheron Ardillon buckle, silver dial, 3-counter chronograph, date, month, day, at 12 o'clock in double window, screw-down crown, Caliber 1141QP mechanical movement. Delivered with are extracted from the archives. Exceptional piece .. the Holy Grail of Swiss watchmaking.