RCA Radiotron Number / Type 56 Vacuum Tube Globe Balloon Style Engraved / Stamped Base NOS-Testing Postcards From These Ken-Rad-MANUFACTURED

These Ken-Rad-MANUFACTURED

It has a tall

This black plate Sylvania 5Y3GT rectifier tube was tested on our Paul Hart-calibrated TV7/U for shorts

The bottle was already tightly-affixed to the base

This matched pair of RCA 6FQ7 / 6CG7 dual triodes was tested on our TV7 for shorts

RCA Radiotron Number / Type 56 Vacuum Tube Globe Balloon Style Engraved / Stamped Base NOS-Testing Postcards From These Ken-Rad-MANUFACTUREDThis new old stock TESTING RCA Radiotron type 56 triode was tested on our Paul Hart calibrated TV7 for shorts, gas and transconductance. There were no shorts or gas. It measured an outstanding 82 where minimum (65%) is 37 and 100% is 57. It has a thin, rounded rectangle top mica spacer; rounded dark gray plates; a dimple, sheet getter; excellent flashing and a sharply engraved base. WE HAVE SCORES OF THOUSANDS OF VACUUM TUBES. IF IT'S NOT LISTED, WE