4 US-Made 3GK5 Vacuum Tubes Valves NOS NIB Lot Of Four Eightynine They have E5E and E5E

They have E5E and E5E date codes

excised chevrons in their top mica spacers as well as 210 5439 and 5413 provenance/date codes

Transconductance measured 56/56 for Tube One and 58/58 for Tube Two where minimum (65%) is 25/25 and 100% is 38

" They have black and silver glass

4 US-Made 3GK5 Vacuum Tubes Valves NOS NIB Lot Of Four Eightynine They have E5E and E5EThese four new old stock, new in box US made 3GK5 tubes tested to spec on our Paul Hart calibrated TV7 U. IN 2021 WE PURCHASED 150,000 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 OF THE TUBES WE SELL ARE OVER 70 YEARS OLD. WE CANNOT GUARANTEE FOR FAILURES AFTER POWER UP AS THERE IS NO WAY TO