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It's probably made in Joizy.






The 2A3 thing is really confusing and I can show you why.Look these three tubes.They are all Sylvania and yet they all have different insulators on top..One is a JAN but still made by Syl. I would say your tube may be a JAN Sylvania or TungSol as they both used that polished glossy black plate where the others used a flat black type.







"
This is a 6B4G made by TungSol in the Joizy plant which is an octal 2A3 with a 6.3v filament.
"For every complex problem there is an answer that is clear, simple, and wrong" H. L. Mencken


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  • It's probably made in Joizy. - Michael Samra 14:36:48 04/09/14 (0)

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