Old tube amp needs fixing. (With video)

I got this amp from an old lady who knew I liked amps and guitars and such. She said her father built it from nothing. He just knew how to do it. I don't know if he had formal training or not but the thing works!... Kinda.
The knobs aren't labeled but I'm pretty sure they are: input, tone, and output.

It's also hard to see the tube part number. Making it hard to replace them. Same for the transformers.
Here is why I said I dont think hes had formal training. The wiring underneath this is just a mess. I know capacitors need to be facing a certain way to not cause interference and noise. These look like they were slapped in however they could fit. Which might be its problem.
Ok here is a video I made to show how this thing sounds and what I mean when I said "kinda" works.
I'm running this through @johnbutler 's Marshall MC412A cabinet and with his De Armond guitar. I'm a drummer though so no solos lol

Thanks for stopping by
Steem on!
-Jake