General Electric GE 5Y3 5Y3GT Vacuum Tube Rectifier Black Plate Gray Glass These four milspec RCA large

These four milspec RCA large logo 12SG7 / VT-209 tubes were tested on our Paul Hart-calibrated TV7/U for shorts

There were no shorts or gas and they measured 30

outstanding flashing and a TOR date code

but I do not recommend using them at any other filament voltage than 12

General Electric GE 5Y3 5Y3GT Vacuum Tube Rectifier Black Plate Gray Glass These four milspec RCA largeThis 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 58 50 where minimum (65%) is 40 40 and 100% is 62 62. It has a bottom, D getter and a 4 09 188 5 date provenance code. 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 202 372 6931