8106 NOS Two Vacuum Tubes. Gm Tested. With Box. Read description.

Two Excellent GE 6AC7 Tubes NOS GM[%]: 96 99 AMPLITREX

Qty 5) 8106 tubes, GE Motorola, NOS. Tested Vintage Electronics

Four NATIONAL, by GE 8106 Tubes NOS NIB Match Construction Test Strong B&K 606

Two GE 6BA6 Tubes NOS NOS NIB Match Const GM[%]: 100 102 AMPLITREX

Matched NOS Pair GE 6V6GT Power Tubes Black Glass Test NOS Amplitrex

Two GE 6GK5 Tubes NOS NIB VHF High Mu Triodes Match Const GM[%]: 83 87 AMPLITREX

NOS Pair Realistic by GE 6V6GTA tubes. Amplitrex Matched results 106% 109% gm