Genuine Vietnam War era RT-505B / PRC-25 FM radio receiver & transmitter (aka Prick 25). This model was originally developed by the Radio Corporation of America in the 1950's and first entered service in Vietnam in 1964 and was the mostly widely used radio in the war. In 1967 General Creighton Abrams, deputy commander of the Military Assistance Command Vietnam called the PRC-25 "The most important tactical item in Vietnam today". This PRC-25 was originally supplied by an Israeli defense contractor TIDIRAN who assembled the radios under license from the U.S. using American parts. They are identical to U.S. supplied PRC-25's from the 1960's. Internally appears complete and is nice and clean inside. External connectors have their original covers, all the dials and switches appear to operate freely, and frequency dials move the frequency numbers correctly.