[Thursday] My rarest CeCo tube

[Michael Thompson]

What is the terminal on the side of the base for?

On Mon, Apr 6, 2020 at 12:27 PM Len Arzoomanian via Thursday <
thursday at newsm.org> wrote:

> Hare is the rarest CeCo tube I have.  AC Pentode P1.  I know of only one
> other.
>
> Len
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-- 
Michael Thompson
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