Sylvania 5Y3 5Y3G Vacuum Tube Rectifier Black Plate ST Shoulder Shape 5E514 5E-514 Tube One (centering pin missing)

Tube One (centering pin missing) measured 46/46 while Tube Two measured 50/46 where minimum (65%) is 25/25 and 100% is 39/39

This matched pair of RCA black plate 5763 tubes were tested on our Paul Hart-calibrated TV7/U for shorts

37 and 44 where minimum (65%) is 25

2 milliamps' plate current and measured 1880 micromhos while Tube Two (Cunningham-labeled) measured 21

Sylvania 5Y3 5Y3G Vacuum Tube Rectifier Black Plate ST Shoulder Shape 5E514 5E-514 Tube One (centering pin missing)This 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 53 58 where minimum (65%) is 40 40 and 100% is 62 62. It has a nifty, old fashioned Coke bottle; a D getter, outstanding flashing; a wire snubber for increased rigidity and an MR Z5R date code. WE HAVE SCORES OF THOUSANDS OF VACUUM TUBES. IF IT'S NOT LISTED, WE MAY HAVE IT. PLEASE