Model family · IWC
Mark XI
1 references11 variants1949–1984
The Mark XI (Mk 11) navigator’s wristwatch, built to the British Ministry of Defence specification 6B/346 and issued from 1949. IWC’s version uses the hand-wound calibre 89 in a soft-iron cage.
Family timeline
All recorded years
19401990
1 references in production order. Overlapping bars show overlapping recorded dates.
19401953196519781990
Dates are those recorded in the catalog. Faint bars mark approximate dates; a dashed point marks a single known endpoint. Undated references remain visible. Chronological order does not establish a predecessor or successor relationship.