Audemars Piguet Huitième Perpetual Calendar Platinum Ref 25751PTWhen we think of AP, its difficult not to think of the Royal Oak. To address this Audemars created the Huitime line to offer haute horology,such as this incredible platinum perpetual calendar, and keep up with brands such as Patek and Vacheron. This is a very special watch that combines two complications the perpetual calendar and a chronograph. Pure class! This example remains in outstanding original condition with a good case and fantastic overall