Vintage Tung Sol Radio vacuum tube, 6SN7 GTB.  Sold "AS-IS".  (My Dad did antique TV/radio repair. He also worked on Ham and CB radios. The tubes listed here and in my other listings are what is left. I have no way of testing the tubes; if a tube didn't work, I doubt he would have kept it.)   Shipped USPS First Class MAIL. Any questions, please contact me.