The Mk XI was a watch born out of necessity and exacting military standards. Following the issuance of the famed “Dirty Dozen” timepieces during World War II, the British Ministry of Defence determined that these watches lacked the accuracy and durability required for aerial navigation. In response, the MOD introduced the 6B/346 navigation watch specification in 1947, later known simply as the Mk XI. Both IWC and Jaeger-LeCoultre produced watches to this specification, though Jaeger-LeCoultre ceased production in 1953, leaving IWC as the sole supplier. IWC would continue outfitting RAF pilots with the Mk XI until the model was formally decommissioned in 1981. Twelve years later, in 1993, IWC revived its celebrated pilot’s watch lineage with the introduction of the Mark XII under reference 3241. While conceived as a civilian offering, the Mark XII drew heavily from the purposeful design language of the Mk XI while incorporating several meaningful technical upgrades. The dial layout remains largely faithful to its predecessor, though the ref. 3241 introduces the modern IWC logo and a discreet date aperture at 3 o’clock, powered by the automatic cal. 884 movement with quick-set date. Additional improvements include a soft-iron Faraday cage for anti-magnetic protection, a screw-down crown for improved water resistance, and a sapphire crystal for enhanced durability. SPECS Stock # IIWCMKXII-2 Brand IWC Style Mark XII Model 3241 Serial 26XXXX Size Men's Material Stainless Steel Dial Matte Black Millimeters 36 Strap 2pc Leather Strap W/ IWC Stainless Steel Tang Buckle CASE & BRACELET The excellent case is believed to remain unpolished, showing crisp edges with minimal signs of use present. The case retains its original IWX fish logo screw-down crown. The case back retains all of its factory markings in crisp and deep condition, with gentle wear present. The watch comes supplied on a 2pc handmade leather strap with its original IWC stainless steel tang buckle. DIAL & HANDS The original matte black dial is flawless, showing no age or damage. The tritium markers feature a charming light cream coloration with no degradation present. The original tritium hands match the dial perfectly and show no degradation when inspected under UV light. ACCESSORIES None. The watch is keeping time, but the service history is unknown. A movement service can be purchased upon request.
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