7 Twist-Lock J-Slot Spring-Loaded #139 Tube Shields For 12AX7-Size Vacuum Tubes Lot Of Seven February 16 2026 This lot of three Tung-Sol

This lot of three Tung-Sol new old stock

Tube One measured 42 in its triode section where minimum (65%) is 25 and 100% is 39

new in box 7Q7s tested to spec on our Paul Hart-calibrated TV7/U

new in box Sylvania 15KY8 tested to spec on our Paul Hart-calibrated TV7/U

7 Twist-Lock J-Slot Spring-Loaded #139 Tube Shields For 12AX7-Size Vacuum Tubes Lot Of Seven February 16 2026 This lot of three Tung-SolThis lot of seven of J slot, spring loaded, 12AX7 size tube shields is in excellent shape. They are all the same size, though some are stamped "138" and others are not. 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