4 National Union NU 6Q7 6Q7GT Vacuum Tubes NOS NIB Lot Of Four June 19 2023

4 National Union NU 6Q7 6Q7GT Vacuum Tubes NOS NIB Lot Of Four June 19 2023These four metal base National Union 6Q7GT tubes 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

I LISTEN TO THESE TUBES IN TUBE EQUIPMENT

Flaired Base Diameter: +/- 24 MM

These tubes have tall bottles

please send them to me and I will test it

This RCA 6AK6 vacuum tube -- and several others just like it --tested to spec on our Paul Hart-calibrated TV7/U

Tube One is missing its centering pin (Please see Picture Four) and has been marked for safe and easy insertion

This Sylvania 5U4G rectifier tube was tested on our Paul Hart-calibrated TV7/U for shorts

These four US-made 6SF7 tubes were tested on our Paul Hart-calibrated TV7/U for shorts

copper support rods

This lot of four US-made black plate 12X4 rectifier tubes measured 43/46

This nicely-illustrated story book is in very good condition

new in box Sylvania 6AE7 6AE7GT tube tested to spec on our Paul Hart-calibrated TV7/U