British MkIII pull fuze (percussion).
1940 dated MkIII pull fuze. Manually operated percussion fuze for intiating charges and also used in improvised mines and booby traps. Made obsolescent in 1942, was up to that point standard issue to special forces amonst others. Replaced by the Switch No.4. This example in good, toned condition, slight crushing to the fuze adapter. Fully strippable.