IWC Watch Pilot's Automatic Mark XX IW328201. The Pilot’s Watch Mark XX captivates with its utilitarian tool watch design and the IWC-manufactured 32111 calibre. Less is more: the Mark XX reduces the design and technical functionality of a pilot's watch to its pure essence. It is the successor to the legendary Mark 11, a precise amagnetic instrument watch IWC developed in 1948 for the navigators and pilots of the British Royal Air Force.