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Sylvania 5U4 5U4GB Vacuum Tube Rectifier Black Plate Nine Eleven new in box Realistic (Radio

$11.39

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new in box Realistic (Radio Shack) Gold Clad Japanese-made 6AU6A tubes tested to spec on our Paul Hart-calibrated TV7/U: 75

but I glued it anyway

This new old stock-testing Svetlana 6550C / 6P27 perforated plate output tube was tested on our Maxi-Matcher 2 with 400 volts on the plates and a bias of -48 volts for shorts

new in box GE 22JR6 tubes tested to spec on our on our Jackson 648

Sylvania 5U4 5U4GB Vacuum Tube Rectifier Black Plate Nine Eleven new in box Realistic (RadioThis black plate Sylvania 5U4GB rectifier tube tested 52 48 in Sections One and Two, respectively, on our Paul Hart calibrated TV7 U where minimum (65%) is 40 40 and 100% is 62 62. It has a top O getter; a crenelated top mica spacer; black plates and jd AED date codes. THIS TUBE'S CENTERING PIN IS MISSING AND IT HAS BEEN MARKED FOR SAFE AND EASY INSERTION. THERE IS A CLOSE UP PHOTO OF THE BASE TO SERVE AS A REMINDER. WE HAVE SCORES OF THOUSANDS OF

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