General Electric GE 6AX3 Vacuum Tube Valve NOS NIB SMAS-11419 new in box RCA 1R5

new in box RCA 1R5 tubes tested to spec on our Paul Hart-calibrated TV7/U

new in box RCA 6BN4A tubes tested to spec on our Paul Hart-calibrated TV7/U

It measured an almost-perfectly-balanced 59/57 where minimum (65%) is 40/40 and 100% is 62/62

This Cunningham narrow bottle 25Z5 tube was tested on our Paul Hart-calibrated TV7/U for emissions

They have engraved / hot-stamped bases on is Champion-branded and the other is Zenith

General Electric GE 6AX3 Vacuum Tube Valve NOS NIB SMAS-11419 new in box RCA 1R5This new old stock, new in box GE 6AX3 tube 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 FORMS OF SHIPPING EXCEPT MEDIA MAIL ARE AUTOMATICALLY INSURED UP TO $100. ETSY PURCHASE PROTECTION COVERS ITEMS UP TO $250 IN