6CU6 Sylvania black plate NOS (55ma)
6CU6 Sylvania black plate NOS (72ma)
6CU6 Sylvania gray plate NOS (58ma)
6CU6 Sylvania gray plate NOS (87ma)
6CU8 US Brands (15 in stock)
6D4 CBS NOS 1959 (6 in stock)
6D4 Chatham by RCA NOS 1956 (3 in stock)
6D4 Sylvania NOS 1967 (10 in stock)
6D4 Sylvania NOS 1974 (6 in stock)
6DB5
6DF6 NOS
6DK3=6DL3 US Brands NOS (0 in stock)
6DK6 NOS (100 in stock)
6DS5 NOS
6DT5 US Brands NOS (4 in stock)
6DT6A
6EQ7 US Brands NOS (3 in stock)
6FV6 US Brands NOS (12 in stock)
6FV8=6BR8A US Brands NOS (30 in stock)
6GQ7 US Brands NOS (18 in stock)
