Astronomical Clock Vacheron Constantin Patrimony Traditionnelle Chronograph Perpetual Calendar 47292 / 000P-9510 with perpetual calendar and chronograph issued in a round case of platinum. The size is 43 x 12.68 mm water resistant to 30 m. Inside the case is set mechanism with manual winding Calibre 1141 QP which provides a power reserve of 45 hours. Materials are present.