1 low noise pair) 6FQ7 GE branded Amperex and Westinghouse NOS 1970”s series filament
1 tube) 6.4/7.4ma Gm=2300/2600 GE Amperex 1973
1 tube) 6.4/7.4ma Gm=2400/2600 GE 1970”s rebranded Westinghouse 1985
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