National 6DW4 Vacuum Tube Valve NOS NIB Paul Revere new in box Amperex 3A2

new in box Amperex 3A2 tubes tested to spec on our Paul Hart-calibrated TV7/U

It measured 60 where minimum (65%) is 37

This matched pair of RCA Cunningham Radiotron Type 49 output tubes was tested on our Paul Hart-calibrated TV7/U for shorts

On the Maxi-Matcher

Bottles: tall

National 6DW4 Vacuum Tube Valve NOS NIB Paul Revere new in box Amperex 3A2This new old stock, new in box National 6DW4 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