Sylvania 5Y3 5Y3GT/G JAN-CHS-5Y3GT/G VT197A Milspec Vacuum Tube Rectifier Black Plate And The Raiders There is some cathode coating

There is some cathode coating that has shed from the filaments

It measured 40 where minimum (65%) is 25 and 100% is 35

4 for Tube One and 30

This Radio Shack / Realistic 6JE6C tube tested 80 on our Paul Hart-calibrated TV7/U where minimum is 54 and new is 100

It has an engraved / stamped base

Sylvania 5Y3 5Y3GT/G JAN-CHS-5Y3GT/G VT197A Milspec Vacuum Tube Rectifier Black Plate And The Raiders There is some cathode coatingThis black plate, milspec Sylvania 5Y3GT G JAN CHS 5Y3GT G VT 197A rectifier tube was tested on our Paul Hart calibrated TV7 U for shorts, gas and emissions. There were no shorts or gas. It measured 53 47 where minimum (65%) is 40 40 and 100% is 62 62. It has a bottom, sheet getter; a US Navy anchor logo and ribbed, black plates. WE HAVE SCORES OF THOUSANDS OF VACUUM TUBES. IF IT'S NOT LISTED, WE MAY HAVE IT. PLEASE ALSO SEE OUT ETSY SISTER SITE