Sylvania 6AE7 6AE7GT Vacuum Tube Valve NOS NIB American-Made This hardcover book is in

This hardcover book is in good condition

This matched pair of Tung-Sol 6C6 tubes tested 43 and 44

there are a few scratches

Three links are available

new in box matched quad of CBS-Hytron black plate 6CL6 tubes were tested on our Paul Hart-calibrated TV7/U for shorts

Sylvania 6AE7 6AE7GT Vacuum Tube Valve NOS NIB American-Made This hardcover book is inThis new old stock, new in box Sylvania 6AE7 6AE7GT tube tested to spec on our Paul Hart calibrated TV7 U. 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 PROBABLY