tWO NEW (NOS) tubeS,  will be tested on Hickok TV-3, 539-C, or B&K707.

 Unless stated otherwise, tubes are tested just prior to shipping, not in advance.

The pins of the loktal tubes often need some cleaning to make good contact in the sockets. If you experience any difficulty, try scraping the pins with a pen knife to remove any oxidation.

There are lots of testers, all of which will give different readings. If our testers don't agree, mine wins.

International buyers assume all responsibility for shipped merchandise.

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