(!!!!) (Best Value Pair) 6SN7GTB RCA coin-base NOS 1970-1975 (8.8/9ma and 9.3/8.3ma)

1 matched pair) 6SN7GTB RCA coin-base NOS 1970-1975
1 tube) 8.8/9.0ma Gm=2600/2700 
1 tube) 9.0/8.3ma Gm=2800/2700 

Good Ma = 7-10ma

Good Gm = 2300-2600

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