(!!!!) (Best Pair) 6CB5A RCA NOS same date codes (90ma and 92ma)
$ 61.99
1 pair) 6CB5A RCA NOS same date codes 1973 (ED)
1 tube) 92ma Gm=8200
1 tube) 90ma Gm=7900
Tested on Amplitrex
Vplate=175
Vscreen=175
Vgrid=-30
Iplate = 70-100ma (Good)
Gm = 7,500 - 9,000 (Good)
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