Sylvania 5Y3 5Y3G Vacuum Tube Rectifier Black Plate ST Shoulder Shape August 9 2020 dimpled sheet getters and excellent

dimpled sheet getters and excellent flashing

This pair of GE black plate 6CG7 / 6FQ7 dual triodes was tested on our Paul Hart-calibrated TV7/U for shorts

new in box Philco 7A5 tube tested to spec on our Paul Hart-calibrated TV7/U

This Philco globe / balloon-style bottle number 36 tube tested 24 on our Paul Hart-calibrated TV7/U where minimum (65%) is 26 and 100% is 40

Sylvania 5Y3 5Y3G Vacuum Tube Rectifier Black Plate ST Shoulder Shape August 9 2020 dimpled sheet getters and excellentThis black plate Sylvania 5Y3G rectifier tube was tested on our Paul Hart calibrated TV7 U for shorts, gas and transconductance. There were no shorts or gas. It measured 56 49 where minimum (65%) is 40 40 and 100% is 62 62. It has a nifty, old fashioned Coke bottle; a D getter, excellent flashing and a 126 date 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