4 Sylvania 7B4 Vacuum Tubes NOS NIB Lot Of Four JTL-6206 6206 US-manufactured Amperex 7699 tube tested

US-manufactured Amperex 7699 tube tested to spec on our Paul Hart-calibrated TV7/U

new in box Sylvania 6HS8 tubes tested to spec on our Paul Hart-calibrated TV7/U

Transconductance measured 44 and 48 where minimum (65%) is 35

This black plate Sylvania 5Y3GT rectifier tube was tested on our Paul Hart-calibrated TV7/U for shorts

4 Sylvania 7B4 Vacuum Tubes NOS NIB Lot Of Four JTL-6206 6206 US-manufactured Amperex 7699 tube testedThese new old stock, new in box Sylvania MANUFACTURED, Kenton LABELED 14BR11 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