By Universal Microphone Co. The T-45 carbon 'lip' microphones were introduced in 1944 and primarily intended for transport aircraft crews. The assembly consists of the microphone unit MC-419 and plastic strap ST-53 that holds the microphone just over the top lip of the wearer. The strap also extends around the sides of the face and ears and the microphone is wired to a plastic coated loom terminating in a 2-pin PL-291-A plug. With box of issue, inner foil bag dated 3/45, microphone assembly, spare 'breath shield' and 2 sided instruction leaflet dated 1st August 1944. The box is in very good condition and the microphone assembly appears unissued condition with storage wear only. A very rare microphone to find these days. Stock code H17402.