Sylvania Wizard Number Type 80 Vacuum Tube Rectifier Black Plates Engraved Base Shoulder ST Shape Hanging Filaments American NOS NIB new in box Sylvania 7X7

new in box Sylvania 7X7 tubes tested to spec on our Paul Hart-calibrated TV7/U

This perfectly-matched septet of new old stock-testing Sylvania 7A7 tubes was tested on our Hickok 800 for shorts

they were forwarded to West Germany

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

Sylvania Wizard Number Type 80 Vacuum Tube Rectifier Black Plates Engraved Base Shoulder ST Shape Hanging Filaments American NOS NIB new in box Sylvania 7X7This (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