Matched Pair RCA Black Plate 6CG7 6FQ7 Vacuum Tubes Valves With Shields Valvo NOS-Testing This is a Dutch auction

This is a Dutch auction for GE-MANUFACTURED gray plate 35W4s

Minimum is 25

The remaining two are labeled "1X2B

new in box RCA 6E5 magic eye indicator tube is nice and bright

Matched Pair RCA Black Plate 6CG7 6FQ7 Vacuum Tubes Valves With Shields Valvo NOS-Testing This is a Dutch auctionThis matched pair of RCA black plate 6CG7 6FQ7 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 68 68 while Tube Two measured 74 74 where minimum (65%) is 50 50 and 100% is 77 77 These tubes have steel support rods and copper support rods for their harp shaped getters. There is a shield between the triodes for reduced cross talk. I have played them in my AC