R.A.F. Type 20 Microphone (Used in D-Type O2 Mask)
Stores Ref. 10A/11994. Black painted alloy microphone, often referred to as the "1941" pattern although actually introduced in October 1940. Very minor paint chipping/rubbing on "exposed" edges but in excellent condition. Air Ministry and Kings Crown markings. Rubber "band" that goes around the microphone on the reverse is excallent. Difficult to upgrade on this one. Stock code O9705.