6528A Raytheon NOS graphite plates 1970 era (119/129mA)
6550A GE stapled plates used/good 1980's (115ma)
6637=BL31 Varian NOS sealed in metal cans
6676=6CB6A GE NOS mobile rated (13 in stock)
6884 Amperex NOS
6907 Amperex USA NOS in Motorola boxes
6910 Sylvania NOS (3 in stock)
6923 Amperex Germany NOS (20 in stock)
6939 NOS (20 in stock)
6953 Cetron NOS (1 in stock) Photo-tube
6973 RCA black plate used/good 1950's (34ma)
6973 RCA gray plate used/good 1970 era (56.5ma)
6973 Sylvania gray plate NOS 1970's (61ma)
6A3 Ken Rad coated glass NOS 1950 (82ma)
6A3 RCA Victor NOS 1948-1949 (62ma)
6A3 Sylvania branded RCA used/good 1940's (54.2ma)
6A3 Sylvania branded Tungsol used/good 1940's (70ma)
6A3 Tungsol coated glass used/good 1940's (44ma)
6A3 Tungsol coated glass used/good 1940's (60ma)
6A4/LA US Brands NOS (5 in stock)
