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(!!) (PAIR) 6CB6A RCA NOS (8.2ma and 8.5ma)
(!!) (PAIR) 6CB6A RCA Tektronix Checked NOS (8.0ma and 8.3ma)
(!!) (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) 6K6GT Philco by Sylvania NOS 1950-1951 (53.5ma and 57ma)
(!!) (PAIR) 6LX6=6LF6 GE NOS (90ma and 92ma) (same Gm)
(!!) (PAIR) 6V6 GE metal can NOS 1976 (34.5ma and 34.0ma) 1-5% matched
(!!) (PAIR) 6V6 GE metal can NOS 1976 (37ma and 38ma)
(!!) (Pair) 71A RCA Victor and Super Silvertone used/good 1930's - 1940's (21.5ma and 25ma) (Same Gm)
(!!) (PAIR) 811 RCA and RCA branded GE like new 1947-1951 (57/36 and 52/36)
(!!) (Pair) EL822 Mullard black plate NOS 1973-1974 (40ma and 41ma)
(!!) (PAIR) EL86 GE Japan by Toshiba 1976 era (64ma and 63ma)
(!!) (Recommended Mullard Pair) EL36 Mullard branded International NOS 1969 (82ma and 88ma)
(!!) (Recommended Pair) 1619 RCA NOS 1952 - 1960's (52ma and 53.6ma)
(!!) (Recommended Pair) 30 Sylvania like new - same plates - different shape top mica (2.7ma and 2.9ma)
(!!) (Recommended Pair) 6AV5GA GE NOS 1960's same build (1) CBS (1) Admiral (50ma and 55ma)
(!!) (Recommended Pair) 6AV5GA GE NOS 1968 (45ma and 50ma)
(!!) (Recommended Pair) 6CB5A Sylvania branded Dumont NOS 1960's (58ma and 60ma)
(!!) (Recommended Pair) 6CB5A Sylvania branded Dumont NOS 1960's (82.5ma and 85ma)
(!!) (Recommended Pair) 6CB5A Sylvania branded Dumont NOS 1964-1966 (65ma and 66ma)
