3 Sylvania 12AZ7 12AZ7A Vacuum Tubes Valves NOS NIB Lot Of Three 12AU7A This new old stock-testing matched

This new old stock-testing matched pair of 1960s vintage Sylvania Fat Boy EL34 / 6CA7 tubes was tested on our Maxi-Matcher 2 tube tester with 400 volts on the plates and a bias of -36 volts on the grids for shorts

This lot of two Tung-Sol 14B6 tubes tested to spec on our Paul Hart-calibrated TV7/U

Sorry I cannot say how they sound

They have 2-30 188-5 and 3-52 188-5 date/provenance codes

new in box Sylvania 12AV7 dual triodes tested on our Paul Hart-calibrated TV7/U

3 Sylvania 12AZ7 12AZ7A Vacuum Tubes Valves NOS NIB Lot Of Three 12AU7A This new old stock-testing matchedThese three new old stock, new in box Sylvania 12AZ7 12AZ7A tubes tested to spec on our Paul Hart calibrated TV7 U. One is a 12AZ7 while the other two are 12AZ7As. 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