Approx. Ø36mm, steel, bolted, base with military marking 6b/346 1480/48, hand winding calibre 89, work number 1149434, original black dial without Broad Arrow (only for Australian Air Force watches), central second, light pointer, leather strap with buckle, functional and very well preserved, only the glass has a scratch. Here you will find all the information on the history of the legendary Mark XI (https://www.cortrie.de/go/J6L).