1948 IWC Mark-11 British Military Rare "Non-Incabloc"

1948 Provision International Popular Mark 11 Royal Air Force model without the precious early seismic protection.
It is a masterpiece model representing the well-known International, with a black mat dial with excellent legibility combining luminous indexes and Arabic numbers, and a double-structured heavy screw-back case with excellent antimagnetic and waterproof properties, which fascinates with its wonderful military taste. Equipped with International's signature hand-wound Cal.89 movement, which was added a hack function for military models, this is a valuable early model manufactured in 1948, before it was equipped with an anti-seismic device.