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5T4 GE NOS 1945 (54/40 and 56/40)
5T4 GE NOS 1945 (56/40 and 58/40)
5T4 GE NOS 1945 (57/40 and 65/40)
5T4 Raytheon NOS 1950's
5T4 RCA like new 1943 (55/40 and 60/40)
