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In Reply to: Suprise, Suprise... posted by Tweaker456 on March 23, 2014 at 16:02:35:
geoffkait's picture showa a coin-base 6SN7. Those were made later, after the JAN tubes came about. JAN tubes go back to the WWII era.
Edits: 03/23/14
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Follow Ups
- RE: Suprise, Suprise... - Alpha Al 19:41:50 03/23/14 (1)
- RE: Suprise, Suprise... - geoffkait 03:35:01 03/24/14 (0)