Stores Ref. 10A/11994. Black painted alloy microphone, often referred to as the '1941' pattern although actually introduced in October 1940. Also known as the 'type 21' but this is the reference given to it when fitted to a wiring loom. Some minor dents and paint chipping/rubbing on exposed edges. Air Ministry and King's crown markings. These microphones were used in conjunction with the type D cloth oxygen masks. A good used example. Stock code O5441.
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