Up for auction is this strong testing match quad of Sylvania Chrome Dome 6SN7 audio vacuum tubes in very nice condition. All four tubes were tested on my TV-7 tester where 50 is the required minimum and all four tubes had no leaks or shorts. All four 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! All international shipping will be done thru the Global Shipping Program and if you do not like this method then do not bid.