Sylvania 6X4 Vacuum Tube Rectifier Black Plates NOS NIB Black Plate NOS NIB This quintet of Tung-Sol number

This quintet of Tung-Sol number / type 27 triodes was tested on our TV7 for shorts

These six new old stock-testing

This softcover book is in good condition

25 out of 10

shields between triodes to eliminate crosstalk

Sylvania 6X4 Vacuum Tube Rectifier Black Plates NOS NIB Black Plate NOS NIB This quintet of Tung-Sol numberThis new old stock, new in box black plate Sylvania 6X4 was tested on our Paul Hart calibrated TV7 U for shorts, gas and emissions. There were no shorts or gas and it measured 55 55 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 QUESTIONS.