6V6GT Tungsol black plate used/good 1950's (38ma)
7408=6V6GT Russian NOS branded International 1970's (46.5ma)
7408=6V6GT Westinghouse used/like new condition "U" getter 1960 era (40.5ma) (rare)
VT-107A=JAN-CHS-6V6GT Sylvania black plate / gray coated glass NOS mid-1940's (31ma)
