Matched Pair Wards Super Airline Number / Type 41 #41 Vacuum Tubes Black And Silver Bottle US-Made 6F7 new in box Hitachi 12AU7

new in box Hitachi 12AU7 / ECC82 dual triode was tested on both our Paul Hart-calibrated TV7/U as well as our Maxi-Matcher Preamp Tube Tester

The spine is in fine shape with no loose pages and the dust jacket has only a few

There are five new old stock

new in box Amperex 9ED4 tube tested to spec on our Paul Hart-calibrated TV7/U

Matched Pair Wards Super Airline Number / Type 41 #41 Vacuum Tubes Black And Silver Bottle US-Made 6F7 new in box Hitachi 12AU7This perfectly matched pair of Wards Super Airline black bottle type number 41 tubes tested as follows on our Paul Hart calibrated TV7 U: 54 and 54 where minimum (65%) is 40 and 100% is 62.. They were made, most likely, by Ken Rad. 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