Superb pair of NOS 1940's NATIONAL UNION grey glass 6SN7GT in original boxes. Same date codes. Fantastic sounding tubes. These predate the legendary black glass version and are just as superb, but much more rare.

Tubes in my auctions are NEW old stock. They have never been used. They are all fully tested on a TV-7 D/U and test as they should - in the 100% to 120% range of a new tube. They have no burn marks, no getter shrinkage, or any other signs of use - because they aren't used. I purchased these tubes well over 20 years ago from a range of sources, all legitimate dealers globally, and kept the best ones. They are coming for auction now as I no longer expect any future use. This is an exceptional opportunity to acquire some of the true elite audio tubes in true new old stock condition.

Shipping is at cost depending on location but probably in most cases won't be too bad.