New Mint Condition: Clear Plastic Housing with the Contact points for the Transmitter element TA-117/PT of the TA-312/PT and TA-43/PT Signal Corps field telephones used in the Vietnam era. Note: this is a cup with the contact elements for the transmitter TA-117/PT microphone also in the same location of the Gray Rubber Round gasket that retains and combines the clear round plastic contact housing for the transmitter element. See attached diagrams that are inserted here.