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407A Western Electric used/good 1959 (32/26 and 34/26)
407A Western Electric used/good 1962 (35/26 and 42/26)
6BL7GT Sylvania low hours 1953 D = rectangle getter halo long scratch on base (33.5/37.5ma)
6BL7GT Sylvania used/good 1954 (39.2/40.4ma)
6BL7GTA GE gray plates NOS 1974 (47/53ma)
6BL7GTA Sylvania tests like new faded printing 1960's (59/85ma)
6X4 GE Beckman like new "D" getter 1962 (54/40 and 52/40)
6X4 GE like new 1950's "D" getter (54/40 and 54/40)
UY41=31A3 Amperex Bugle Boy France NOS 1964 (0 in stock)
UY41=31A3 Philips Miniwatt "D" getter halo NOS 1958 (1 in stock)
