Matched Quad CBS-Hytron 6CL6 Vacuum Tubes Valves Black Plate NOS NIB 6K6 I could find precious little

I could find precious little information on this two-record set with my baby Russian

IT IS YOUR RESPONSIBILITY TO INTERACT WITH YOUR CUSTOMS AND POSTAL AUTHORITIES TO FIND THE PACKAGE

new in box Amperex 9ED4 tube tested to spec on our Paul Hart-calibrated TV7/U

IF Amplifier 12BA6

new in box Sylvania Number 37 tube tested to spec on our Paul Hart-calibrated TV7/U

Matched Quad CBS-Hytron 6CL6 Vacuum Tubes Valves Black Plate NOS NIB 6K6 I could find precious littleThis new old stock, new in box matched quad of CBS Hytron black plate 6CL6 tubes were tested on our Paul Hart calibrated TV7 U for shorts, gas and transconductance. There were no shorts or gas. Transconductance measured 49, 50, 50 and 52 where minimum (65%) is 30. 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