Sylvania 5BC3 Vacuum Tube Valve NOS NIB LowtechTwoo 7K new in box RCA 6AV5

new in box RCA 6AV5 tubes tested to spec on our Paul Hart-calibrated TV7/U

crenelated rectangular mica spacers

new in box black plate CBS-Hytron 6W4GT tested to spec on our Paul Hart-calibrated TV7/U

they measured 52

Magnavox-LABELLED 6CW5 tube tested to spec on our Paul Hart-calibrated TV7/U

Sylvania 5BC3 Vacuum Tube Valve NOS NIB LowtechTwoo 7K new in box RCA 6AV5This new old stock, new in box Sylvania 5BC3 tested to spec on our Paul Hart calibrated TV7 U. 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 OF THE TUBES WE SELL ARE OVER 70 YEARS OLD. WE CANNOT GUARANTEE FOR FAILURES AFTER POWER UP AS THERE IS NO WAY TO DETERMINE