Up for sale here is this NOS NIB Tung-Sol 6SN7GTB vacuum tube.  I tested it on my B&K 747B tube tester, and it tested at 76/72, on a 0-120 scale where 65 is minimum good, and did not have any shorts or grid emissions.  Most 6SN7 tubes test around 65-75 on this tester.  This is most likely from mid-to-late 1950s or possibly early 1960s.  This is an awesome tube and is guaranteed to work great for you.  Please see my pictures for details.

US shipping and handling is $4, and international is $12.  I accept Paypal.  If you have any questions, please ask.

I have a number of other tubes & sockets, collectibles, Magic cards, and vintage electronics listed--feel free to take a look!