(PAIR) 6AX4GT RCA used/very good (54/40 and 54/40)
6AX4GT CBS NOS 1950's (54/40)
6AX4GT CBS short bottle NOS 1950's (54/40)
6AX4GT RCA Motorola 1961 (54/40)
6AX4GT RCA NOS 1959 (54/20)
6AX4GT RCA used/tests like new 1955 era (56/20)
6AX4GTB GE NOS 1966 (59/20)
6AX4GTB GE used/strong 1960 (60/40)
6AX4GTB Raytheon Japan black plate NOS 1960's (56/20)
6AX4GTB Raytheon Japan copper plate NOS 1970 era (54/20)
6AX4GTB Raytheon Japan NOS 1970 era (54/20)
6AX4GTB Raytheon used/like new (55/40)
6AX4GTB RCA NOS 1968 (54/20)
6AX4GTB RCA used/tests like new 1964 (57/40)
6AX4GTB Rogers Canada NOS 1960's (52/20)
6AX4GTB Sylvania coin-base NOS 1970's (54/20)
6AX4GTB Sylvania used/good (52/40)
