General Electric GE 5Y3 5Y3GT Vacuum Tube Rectifier Black Plate Radio Craftsman RC-2 new in box RCA 12K8Y

new in box RCA 12K8Y tube -- and another just like it -- tested to spec on Paul Hart-calibrated TV7/U

clear glass 6K6GT tubes was tested on our Maxi-Matcher tube tester with 325 volts on the plates and a bias of -36 volts

54 and 64 where minimum (65%) is 50

65 and 79 where minimum (65%) is 45

excellent flashing and well-secured bases and bottles that are nice and tight

General Electric GE 5Y3 5Y3GT Vacuum Tube Rectifier Black Plate Radio Craftsman RC-2 new in box RCA 12K8YThis black plate GE 5Y3GT rectifier tube was tested on our Paul Hart calibrated TV7 U for shorts, gas and transconductance. There were no shorts or gas. It measured 55 50 where minimum (65%) is 40 40 and 100% is 62 62. It has a top, D getter, excellent flashing and 5 04 188 5 date factory codes. 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