(!!!!!) (BEST VALUE PAIR) 6L6GC RCA Black Plate used/good 1970-1975 (66.5ma and 67.5ma) (Gm like new)

1 matched pair) 6L6GC RCA Black Plate used/good 1970-1975 in white boxes, some scratches on each tube base, 1 tube taller than the other

1 tube) 66.5ma Gm=6000 (around 1970)

1 tube) 67.5ma and Gm=6050 (1/2" taller glass) mid-1970's

Matched on Amplitrex

Vplate=250V

Vscreen=250V

Vgrid=-14V

Good Ma range 60-70ma

Good Gm range 5500-6000

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