Sylvania Wizard Number Type 80 Vacuum Tube Rectifier Black Plates Engraved Base Shoulder ST Shape Hanging Filaments American NOS NIB It measured an almost-perfectly-balanced 71/72

It measured an almost-perfectly-balanced 71/72 where minimum (65%) is 56/56 and 100% is 86/86

This tube has two additional vertical support rods

It measured 54/66 where minimum (65%) is 50/50 and 100% is 77/77

79/77 where minimum (65%) is 50/50

side harp getters

Sylvania Wizard Number Type 80 Vacuum Tube Rectifier Black Plates Engraved Base Shoulder ST Shape Hanging Filaments American NOS NIB It measured an almost-perfectly-balanced 71/72This (most likely) Sylvania MANUFACTURED Wizard BRANDED number type 80 rectifier tube was tested on our Paul Hart calibrated TV7 U. It measured 50 46 where minimum (65%) is 40 40 and 100% is 62 62. It has a dimpled sheet getter; an engraved base; hanging filaments and outstanding flashing. WE HAVE SCORES OF THOUSANDS OF VACUUM TUBES. IF IT'S NOT LISTED, WE MAY HAVE IT. PLEASE ALSO SEE OUT ETSY SISTER SITE "LOWTECHTWOO" AND OR CALL OR TEXT US AT 202