35 mm stainless steel with screwed back signed with the "Broad Arrow". The Broad Arrow was used in Britain to mark objects purchased by the British Government.
The white dial with Arabic numerals is made of soft iron and, together with the dust cover over the movement, forms an anti-magnetic, so-called Faraday cage.
The watch is equipped with the famous cal. 89 movement built into a stainless steel case. The movement is equipped with 16 jewels and the escapement consists of a non-magnetic "Glucydur" balance with a self-compensating, non-magnetic "Nivarox" hairspring. Timekeeping can be synchronised via a "hack" second.
perfect original condition
All Mark XI watches were subjected to rigorous testing in the chronometer workshop of the Royal Greenwich Observatory in Herstmonceux. And for good reason, because the accuracy had to meet the specifications of the users, they were supplied to the R.A.F., FAA (Fleet Air Arm), RAAF (Royal Australian Air Force) RNZAF (Royal New Zealand Air Force), among others. The IWC Mark XI was used by the airforce pilots since its introduction and was finally retired in 1981.
There is a story behind a vintage watch.
Besides the obvious fact that traveling down the years,
a watch absorbs the energy of time and history, it often has a significant story to tell, based on the purpose it was originally made for.
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