
All very admirable as an exercise, but not sure why.
( , Thu 27 Oct 2022, 15:20, Reply)

I buy them for a few quid at boot sales, dust them down and sell them on (for ££s or £££s) to collectors and restorers who then use some of the skills in this 'ere video to get them working and triple/quadruple the value again.
I wouldn't bother making my own vacuum tubes though, but then I do own an unusually large number of valves.
( , Thu 27 Oct 2022, 15:37, Reply)

I guess it was 1940's, all valves of course. It did work (best on Radio Moscow), took a while to warm up, then got hot, and it stank of hot tortoiseshell Bakelite. From what you say it would be worth a few quid now.
( , Thu 27 Oct 2022, 16:39, Reply)

That was my thought but could not articulate it being a complete moron
( , Thu 27 Oct 2022, 23:20, Reply)