You are bidding on a pair of vintage Western Electric type JW 2C51 radio/audio tubes made for the US Military.  These are also known as 396A tubes.  They test strong on my calibrated TV-7D/U tester, where the minimum for a good tube is 26 on each plate.  These test at 45 and 46 for one tube, and 47 and 48 for the other tubes, so these test as new.  They are identical with square getters and were made several months apart in 1958, with date codes of 826 and 839.  They should be a great sounding pair for your amplifier.  Shipping weight is 6 ounces.  Please see my other auctions for more interesting radio and audio items, and tubes.

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