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Tubes Asylum Questions about tubes and gear that glows. FAQ |
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Tubes Asylum Questions about tubes and gear that glows. FAQ |
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In Reply to: Re: Date codes, RCA 6SN7GTB posted by olaps on December 3, 2006 at 04:45:13:
I'm not sure about the rest of the codes but the 5-56 would indicate a May, 1956 manufacture date.
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Follow Ups
- Re: Date codes, RCA 6SN7GTB - Alnicoman 07:24:53 12/03/06 (0)
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