Sylvania Gold Brand GB-6X4WA 6X4 Vacuum Tube Rectifier Milspec Black Plates NOS NIB 22KV6 Novar T52 and if it is

and if it is

new in box milspec GE 6C4 6C4WA triodes was tested on our Paul Hart-calibrated TV7/U for shorts

One is an early 1X2

These seven US-made 5U8 tubes tested as good on our Hickok 800

steel support rods and gray plates

Sylvania Gold Brand GB-6X4WA 6X4 Vacuum Tube Rectifier Milspec Black Plates NOS NIB 22KV6 Novar T52 and if it isThis new old stock, new in box, black plate, milspec Sylvania GB 6X4WA was tested on our Paul Hart calibrated TV7 U for shorts, gas and emissions. There were no shorts or gas and it measured where minimum (65%) is 40 40 and 100% is 62 62. 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 IF YOU DO NOT SEE WHAT YOU NEED OR HAVE ANY