Sylvania 6KZ8 Vacuum Tube Valve NOS NIB 8 Number Type 40 Tube One measured 55 while

Tube One measured 55 while Tube Two measured 62 where minimum is 34 and new is 60

All measured 2100 micromhos where new/nominal is 2000 and minimum (65%) is 1300

new in box US-made 12SF5/ 12SF5GT tubes tested to spec on our Paul Hart-calibrated TV7/U

excellent flashing and smooth

Sylvania 6KZ8 Vacuum Tube Valve NOS NIB 8 Number Type 40 Tube One measured 55 whileThis Sylvania 6KZ8 tube tested to spec on our Paul Hart calibrated TV7 U. BECAUSE OF THE BIZARRE, INTRUSIVE AND DRACONONIAN GERMAN PACKAGING REGULATIONS AND THE SEVERE FINES AND PRIVACY INTRUSIONS ASSOCIATED WITH THEM WE NO LONGER SHIP TO GERMAN ADDRESSES FROM JUNE 1, 2022. WE WILL HAPPILY SEND YOUR PACKAGE TO A NEIGHBORING COUNTRY OR MAKE SUITABLE ARRANGEMENTS. IN 2021 WE PURCHASED 150,000 VACUUM TUBES. IF IT'S NOT LISTED, WE PROBABLY HAVE IT. PLEASE