1949 – 2005
In 1949, IWC developed its first ever pilot’s watch – the Mark XI. While the previous models were also used by the military, they were not pilot’s watches but ones built specifically for the British Army. The Mark XI meanwhile, was specifically built to help the Royal Air Force navigators during their dead reckoning duties
Mark XI – While designed from the outset for the use of RAF navigators, it was later on used by pilots as well. It’s characterized by the addition of luminous markers at the 3, 6, 9 and 12 hour markers. It also inherited the water and magnetic resistance of its predecessors.
Mark XII – It’s not until 1993 that the Mark Series continued, with the launch of the Mark XII. While this revival was virtually a replica of the previous model, it came the first self-winding movement in the series, hence the “Automatic” text on the dial; and also a date display.
Mark XV – In 1999, IWC launched the Mark XV, which many consider the Mark Series’ transition from a military watch to a civilian timepiece. It introduced a bigger size (38mm, from 36) and replaced the previous Jaeger LeCoultre movements with an IWC movement. The Mark XV also marked the end of the traditionally styled Mark model, because in 2006, IWC introduced its modernized successor.