Sylvania 6BX7 6BX7GT Vacuum Tube NOS NIB TA1 Sylvania T04 new in box RCA 6AX4

new in box RCA 6AX4 / 6AX4GTB tubes tested to spec on our Paul Hart-calibrated TV7/U

an engraved base and terrific flashing

These seven new old stock

This Zaerix 6CU7 / ECH42 tube tested to spec on our Paul Hart-calibrated TV7/U

new in box Sylvania 8LT8 tubes tested to spec on our Paul Hart-calibrated TV7/U

Sylvania 6BX7 6BX7GT Vacuum Tube NOS NIB TA1 Sylvania T04 new in box RCA 6AX4This new old stock, new in box Sylvania 6BX7GT tube tested to spec on our Paul Hart calibrated TV7. It measured 52 55 where minimum (65%) is 38 and 100% is 58. 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 INSURED