Matched Quad RCA 6FQ7 / 6CG7 Vacuum Tubes 6K6 Black And Silver new in box Silvertone 6LJ8

new in box Silvertone 6LJ8 tube tested to spec on our Paul Hart-calibrated TV7/U

For sale are three new old stock

There are four new old stock

35 and 43 where minimum is (65%) is 36 and 100% is 55 and 100% is 55

This lot of four North American-made number 78 tubes was tested on our Paul Hart-calibrated TV7/U for shorts

Matched Quad RCA 6FQ7 / 6CG7 Vacuum Tubes 6K6 Black And Silver new in box Silvertone 6LJ8This matched quad of RCA 6FQ7 6CG7 dual triodes was tested on our TV7 for shorts, gas and transconductance. There were no shorts or gas and their readings are as follows: They measured 66 59, 68 58, 68 62 and 70 60, respectively, where minimum (65%) is 50 50 and 100% is 77 77. These tubes have steel support rods; ladder plates; side D getters and excellent flashing. As I write, I am playing them with adapters (not included) in my Radio Craftsmen RC 2