Well, your TRC is upside down!
It looks to be in reasonable condition. I'm not sure whether the neck has been (attempted to be) reset or not. Looks like there's some fretboard binding missing on the bass side. And it looks like stress-related checking on the neck heel, but I'm not sure about that from the pictures.
I'd say before putting any money or time into it, try to get it into playable condition as it is. I think I see some saddle left here, so hopefully getting the neck straight with the truss rod and then doing a setup shouldn't be much of a problem.
The shaving of the finish on the back of the neck is probably not a big deal. Not sure what caused it.
The unfortunate placement of the jack on the treble side is really not a big deal, but I'd basically toss any electronics that it came with and start over (if you even want to).
Best wishes.