Sylvania 12SK7 12SK7GT Vacuum Tube Valve NOS-Testing Mitch Miller This lot of two National

This lot of two National Union type 85 tubes was tested on our Paul Hart-calibrated TV7/U for shorts

this unique -- and nicely-framed -- work of art captures the raw

This new in box JJ 6BQ5 was tested on our Maxi-Matcher with 325 volts on the plates and a bias of -14 volts for shorts

This lot of four US-made black plate 12X4 rectifier tubes measured 43/46

10-15% OF THEM ARE NOT SUITABLE FOR HIGH END AUDIO APPLICATIONS

Sylvania 12SK7 12SK7GT Vacuum Tube Valve NOS-Testing Mitch Miller This lot of two NationalThis new old stock testing Sylvania 12SK7GT tube tested 64 on our Paul Hart calibrated TV7 where minimum (65%) is 48. BECAUSE OF THE BIZARRE, INTRUSIVE AND DRACONIAN GERMAN PACKAGING REGULATIONS AND THE SEVERE FINES AND PRIVACY INTRUSIONS ASSOCIATED WITH THEM WE NO LONGER SHIP TO GERMAN ADDRESSES. 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