Some of those tube are worth $$$ today depending on what they are. I have heard of these amps but never saw any myself,I'd be curious as to what tube they used I have paid as much as $100 a tube back when I didnt have my prioritys in order. I have known people who have paid much more than that.
This is CABL.com posting #179124. Tiny Link: cabl.co/mULg