Up for auction is this strong testing match pair of Sylvania 6L6GB black plates audio vacuum tubes in very nice working condition. Both tubes were tested on my TV-7 tester where 25 is the required minimum and both tubes had no leaks or shorts. Both tubes would make a super nice addition to anyone's collection or to use either one. Please, look at the above pictures for test results as well as the overall cosmetic condition of each tube. Thanks For Looking! Al...l international shipping will go thru the Global Shipping Program, if you do not like this method please, do not bid!