Disposal of weak c.r.t.???

[Tubejunke]

I have a weak 21ZP4B that I pulled from my '56 Philco that is taking up much needed space. Years ago I just tossed the old junk but these days I'm not sure what really is junk and what could be of some use to someone. I guess the only practical use of this would be if someone had a set with a shattered tube and could use a rebuildable replacement, but being a mid '50's tube I doubt I am going to find anyone looking for one, much less wanting to sink the $$ into a rebuild.

Just looking for "junk" confirmation I guess..

Thanks