Sylvania Black Plate 5U4 5U4G Hanging Filament Vacuum Tube Rectifier Shoulder ST Shape 6MV8 Nonal T24 excellent flashing and three horizontal

excellent flashing and three horizontal holes underneath and parallel to the plates' short axes

There were no shorts or gas and it measured as follows:

They have double O getters

new in box Raytheon 6AL11 tube tested to spec on our Paul Hart-calibrated TV7/U

It measured 57/59 where minimum (65%) is 40/40 and 100% is 62/62

Sylvania Black Plate 5U4 5U4G Hanging Filament Vacuum Tube Rectifier Shoulder ST Shape 6MV8 Nonal T24 excellent flashing and three horizontalThis Sylvania MANUFACTURED, Admiral BRANDED hanging filament 5U4G rectifier tube tested 54 in Section One and 56 in Section Two on our Paul Hart calibrated TV7 U where minimum (65%) is 40 40 and 100% is 62 62. It has a 312 813 provenance date code; underwhelming flashing; a bottom D or perhaps U getter and wire snubbers. 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"