[Bob Andersen]

The wiring is a real mixed bag. Some cloth, some flexible rubber wire and some rock hard rubber. Luckily only the transformer wire was actually falling off. I'm inclined to leave the rest alone.

Yes, that is the output transformer and it's good

I find the tube lineup a bit odd. 84, 6A8, 78, 37, 75 41.
I wouldn't expect a set from '39 to be using 75s & 78s