Matched Pair General Electric GE 6FQ7 / 6CG7 Vacuum Tubes Valves Copper Support Rods NOS NIB Recordings Stereo new in box Sylvania 12AV7

new in box Sylvania 12AV7 dual triode was tested on our Paul Hart-calibrated TV7/U for shorts

They tested as follows: 40/32

gray plates and very good flashing

a clear top with red paint (indicating it is a selected

These tubes have dark

Matched Pair General Electric GE 6FQ7 / 6CG7 Vacuum Tubes Valves Copper Support Rods NOS NIB Recordings Stereo new in box Sylvania 12AV7This new old stock, new in box nearly perfectly matched pair of GE MANUFACTURED 6FQ7 6CG7 dual triodes was tested on our Paul Hart calibrated TV7 U for shorts, gas and transconductance. There were no shorts or gas. Tube One measured 76 74 while Tube Two (GE MANUFACTURED, ZENITH LABELED) measured 76 76 where minimum (65%) is 50 50 and 100% is 77 77. These tubes have copper support rods; top O getters, gray ladder plates; excellent flashing and three