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Yep, those are it...

208.154.158.193

Those are the Sylvania's I was talking about. I have the "CAA Government Conract" Sylvania 5751's. Sylvania sold the exact same tube under different "labels", one for the standard market and the other labeled and packaged for government contract channels. Here's how Joe S. describes it:

"These are early Sylvania 5751s from the '50s and they are distinguished from their later brethren by their black plates. The Gold Brand (literally, Sylvania's premium consumer tube line) version is a bit unusual in that the black plate gold brands had steel pins rather than the gold pins of other tubes in that line. Both of these tubes were apparently made on the same production line - those intended for the consumer market got the Gold Brand label and those for government contract were custom labeled for the acquiring agency (JHS or CAA for example - CAA-5751, JHS-5751). The ink used on the tubes themselves was gold and it rubs off easily, so even NOS tubes can have partial labels. Now all of this is my conjecture based on comparing the internal structures carefully and comparative listening - but after doing so I am convinced the tubes are identical."

Try them out and please let me or us know how you like them!

Sean Heisler




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  • Yep, those are it... - Sean H 22:10:04 10/04/99 (0)


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