Mystery tube

[Peter J. Havens]

Hey Guys:
    This isn't "Heath", but it does have me stumped: I was working on an old receiver last night. Needed to replace a tube, so went out to my storage barn and found an old box of tubes I hadn't seen in years. They were old tubes that my dad had kept when he was doing TV and radio repair back in the early 1950's. Sure I found some familiar numbers, but then these:
a "283A" and a "UX245", both made by Westinghouse, both 4-prong, bakelite base, about 5 inches tall. I can't find them in my 1973 RCA tube manual, any substitution manual, Antique Electronic Supply catalogs, nowhere. I'm guessing they gotta be 1920's era. Any ideas, guys (they sure look neat; maybe I'll make a little lamp out of one)?!
     Just wondering....                                                                   Peter Havens
                                                                                                  KA2SQJ

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