Matched Pair Sylvania 6X5 6X5GT Black Plate Vacuum Tubes Valves Rectifiers 38HK7 NOS NIB new in box (For Tube

new in box (For Tube One) matched pair of Unitron 6AK5 tubes was tested on our Paul Hart-calibrated TV7/U for shorts

Two are GE and one is Sylvania and all were likely for a contract hence the same boxes

great flashing and 63-48 188-5 and 64-13 188-5 factory/date codes

44/44 and 46/45 where minimum (65%) is 25/25 and 100% is 38/38

53/53 where minimum (65%) is 40/40 and 100% is 62/62

Matched Pair Sylvania 6X5 6X5GT Black Plate Vacuum Tubes Valves Rectifiers 38HK7 NOS NIB new in box (For TubeThis matched pair of Sylvania 6X5GT rectifier tubes was tested on our Paul Hart calibrated TV7 U for shorts, gas and emissions. There were no shorts or gas. They measured 54 56 and 55 54 where minimum (65%) is 40 40 and 100% is 62 62. They have black plates; dimpled, foil getters and rectangular top and bottom spacers. 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"