Silvertone Number / Type 56 Vacuum Tube Valve Globe Balloon Style Engraved / Hot-Stamped Base NOS-Testing Stereo LP M 35128 It measured 36/39 where minimum

It measured 36/39 where minimum (65%) is 18/18 and 100% is 28/28

new in box RCA 6HS5 tested to spec on our Paul Hart-calibrated TV7/U

Tube Two measured 2930/21

new in box National Union type 43 tubes tested to spec on our Paul Hart-calibrated TV7/U

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

Silvertone Number / Type 56 Vacuum Tube Valve Globe Balloon Style Engraved / Hot-Stamped Base NOS-Testing Stereo LP M 35128 It measured 36/39 where minimumThis new old stock testing Silvertone round plate type 56 triode was tested on our Paul Hart calibrated TV7 for shorts, gas and transconductance. There were no shorts or gas. It measured 60 where minimum (65%) is 37. It has a thin, hexagonal top mica spacer; rounded dark gray plates; a button thimble getter and excellent flashing. There is a crack in the base, but the bottle is firmly cemented to it and there is no movement at all possible. WE HAVE