British No.4 Mk I Pull Switch – SOE / OSS (F87 AA) Equipment supporting South African military issue

supporting South African military issue rather than civilian workwear

English) above and “SALM” (Suid-Afrikaanse Lugmag

being favoured by officers or well-connected non-commissioned personnel seeking stronger

The design prominently features a castle

surmounted by the Tudor Crown

British No.4 Mk I Pull Switch – SOE / OSS (F87 AA) Equipment supporting South African military issueAn original British WWII No. 4 Mk I pull switch, designed for use as a sabotage initiator by Special Operations Executive (SOE), Office of Strategic Services (OSS), Commandos, and sabotage units. The device consists of a small cylindrical brass body with a central striker mechanism, retaining its original trip wire wrapped around the device. When tension is applied to the cord, the striker is released, setting off an explosive charge or detonator cap.