4 Ken-Rad 50L6 50L6GT Vacuum Tubes Black / Gray Glass Lot Of Four June 27 2023 new in box GE 21GY5

new in box GE 21GY5 tubes tested to spec on our Paul Hart-calibrated TV7/U

They measured (from left to right): 56

but has GE 188-5 and a sutured top

An 8 out of 10

The GM-LABELED ones all have 312 Sylvania EIA codes

4 Ken-Rad 50L6 50L6GT Vacuum Tubes Black / Gray Glass Lot Of Four June 27 2023 new in box GE 21GY5This lot of four Ken Rad coated glass 50L6GT tubes was tested on our Paul Hart calibrated TV7 U for shorts, gas and transconductance. There were no shorts or gas. They measured 38, 58, 60 and 68 where minimum (65%) is 45. 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. 1. MOST