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(!!) (PAIR) 6CL6 RCA NOS 1966-1967 (25.0ma and 26.6ma)
(!!) (PAIR) 6CL6 RCA NOS 1970's (28.5ma and 29ma)
(!!) (PAIR) 6CW4 GE NOS 1980-1981 (88/60 and 91/60)
(!!) (Pair) 6GK6 Canada probably by Philips Canada, Holland style construction 1960's used/good (45ma and 46.5ma)
(!!) (Pair) 6GK6 Canada probably by Philips Canada, Holland style construction 1960's used/good (50ma and 52ma)
(!!) (PAIR) 6LX6=6LF6 GE NOS (90ma and 92ma) (same Gm)
(!!) (Pair) 6S4A GE NOS 1969-1970 (24.0ma and 25.5ma)
(!!) (Pair) 6SF5 RCA metal can NOS 1948-1957 (1.2ma and 1.0ma)
(!!) (Pair) 6SJ7 GE metal can NOS 1977 (2.4ma and 2.3ma) (same Gm)
(!!) (PAIR) 7AF7 Sylvania branded RCA and GE NOS black round plates NOS 1956-1958 (7.0/7.6ma and 8.2/7.8ma) (close Gm matching)
(!!) (Pair) EL822 Mullard black plate NOS 1973-1974 (40ma and 41ma)
(!!) (Read Review) 6SH7GT Ken Rad 1950's rebranded Raytheon NOS 1970 (11.2ma and 11.2ma) (close Gm)
(!!) (Recommeded Pair) 6BX7GT GE branded NOS "D" getter 1958 - 1 tube branded RCA (72ma/95ma and 92/87ma) (highest mA and Gm)
(!!) (Recommended Mullard Pair) EL36 Mullard branded International NOS 1969 (82ma and 88ma)
(!!) (Recommended Pair) 0B2 Amperex Globe Holland NOS 1970's made in Europe (argon gas)
(!!) (Recommended Pair) 0B2 Amperex Globe Holland NOS 1970's made in Japan (argon gas) (Copy)
(!!) (Recommended Pair) 0B2 Haltron France like new 1961 (argon gas)
(!!) (Recommended Pair) 0B3 Sylvania NOS 1956 same build
(!!) (Recommended Pair) 0C3 Sylvania NOS 1953-1970 same build (argon)
(!!) (Recommended Pair) 12AX4GTA RCA NOS 1960 (98-99/60)
