This is an T-30-V Throat Microphone and strap assembly. These were used by US Army Air Corps Pilots both in Fighters and Bombers During the second World War. The wiring is in good condition and serviceable. They have a PL-291 plug. Some are made by Shure Brothers and some by Western Electric they are in good condition for 70+ years old. These are sold as singles and we do combine shipping.