[Dersu Uzala]

The big tube dealer, Antique Electronicsm sells these for $42, and generic for
$13.10.
http://www.tubesandmore.com/

Boutique stores want $90
http://www.vacuumtube.com/guitar.htm





In article , says...

Are these usable in any kind of radio/audio gear? I
have maybe a dozen or so of these for sale if there is a use for them.
They were part of some things I grabbed from a telephone microwave relay
station that was being done away with. Actually have some other oddball
tubes, thermal relays inside a vacuum tube enclosure and other odd stuff
if anyone is interested. Can take and upload pictures of the stuff too.