Main piece is a rubber piece with 2 circular plastic raised areas. Between them is written in red: "8C 742 A", and on the back is the manufacturer's name. There is a brown and black adjustable elasticised fabric strap snapped to either end. A black chord extends from the rubber part. 240 mm down there is a black plastic attachment where the chord has been reinforced with black electrical tape. The far end of the chord is a plastic piece with a 25 mm cylindrical metal piece protruding from the end which is also reinforced with black tape.
8C / 742 / A Ink Stamp
Western Electric / MADE IN USA / D173077 / T-30-B Maker's Mark
Western Electric Company. Microphone - Throat, 2004.666. The Museum of Transport and Technology (MOTAT).