7 Twist-Lock J-Slot Spring-Loaded #139 Tube Shields For 12AX7-Size Vacuum Tubes Lot Of Seven February 16 2026 new in box RCA 6GF7

new in box RCA 6GF7 / 6GF7A tubes tested to spec on our Paul Hart-calibrated TV7/U

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

This lot of three Tung-Sol new old stock

This LP is in nice shape

7 Twist-Lock J-Slot Spring-Loaded #139 Tube Shields For 12AX7-Size Vacuum Tubes Lot Of Seven February 16 2026 new in box RCA 6GF7This 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