The IWC Military Watch series, although produced during World War II, officially named the Mark military watches starting from Mark XI. The earlier models, Mark IX and Mark X, were named by watch enthusiasts in later years. The true Mark series begins with Mark XI, which served as the first-generation pilot watch for the Mark series and the Royal Air Force of the United Kingdom. Mark XI featured the latest Jaeger-LeCoultre manual movement, Caliber 89. With Mark XII, the movement transitioned from manual to automatic, using the JLC Caliber 889, marking the last generation of Mark series watches to adopt JLC movements. After that, IWC started using automatic movements based on ETA2892, and the size of the watches also increased. Therefore, we consider Mark XII as a pivotal timepiece in the Mark series.
The Mark XII watch in question was purchased in 2000. The luminescent markers and hands on the dial are well-preserved, with no signs of oxidation on the dial. The glass is free from any scratches. The original stainless steel bracelet is in excellent condition and provides comfortable wear. It is rare to find a Mark XII with a steel bracelet in such a well-preserved state on the market. The watch comes with a guarantee card but does not include the box.