IBM vacuum tubes

Guy N. decguy at songdog.eskimo.com
Sun Jun 21 08:22:25 CDT 2020


On Wed, 2020-06-17 at 11:27 -0400, William Donzelli wrote: 
> They are indeed GEs! 188 is the clue.
> 

Thanks!  What is the secret decoder ring that tells you 188 means GE?



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