4 Ken-Rad Number / Type 58 #58 Vacuum Tubes Valves Engraved Stamped Base Lot Of Four June 20 2025 It measured 40 where minimum

It measured 40 where minimum (65%) is 31

new in box Trigon UCH81 tube tested to spec on our Paul Hart-calibrated TV7/U

This is a Dutch auction for GE-MANUFACTURED gray plate 35W4s

This matched pair of Cunningham / RCA 6F5s were tested on our Paul Hart-calibrated TV7/U for shorts

4 Ken-Rad Number / Type 58 #58 Vacuum Tubes Valves Engraved Stamped Base Lot Of Four June 20 2025 It measured 40 where minimumThis lot of four Ken Rad number type 58 stamped engraved base tubes was tested on our Paul Hart calibrated TV7 U for shorts, gas and transconductance. There were no shorts or gas and they measured as follows: 40, 45, 46 and 49 respectively, where minimum (65%) is 36 and 100% is 55. 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