General Electric GE 6BW4 Vacuum Tube NOS NIB January 18 2024 new in box US-made 17D4

new in box US-made 17D4 tubes tested to spec on our Paul Hart-calibrated TV7/U

This new old stock-testing matched quad of Sylvania 7A7 tubes was tested on our Hickok 800 and all measured 1900 micromhos where new/nominal is 2000 and minimum (65%) is 1300

new in box National Union 7Y4 tubes in this lot

This CD is in excellent shape

new in box Zenith 6HA5 / 6HM5 tubes tested to spec on our Paul Hart-calibrated TV7/U

General Electric GE 6BW4 Vacuum Tube NOS NIB January 18 2024 new in box US-made 17D4This new old stock, new in box GE 6BW4 tube tested to spec on our Paul Hart calibrated TV7 U. Two of these tubes are available initially in this Dutch Auction. Etsy will indicate how many are available. 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