RT-707 BC 1 parts machine is a mess - cosmetic or junk?

'BC' in title means ' Basket case' machine. (I am working on two RT-707's - yeah must be nuts)
So in the middle of working on my first RT-707 project, I find this dirty 'parts only' unit on Ebay, throw an offer at the seller, and it gets accepted.
This is how it arrived and a first look at why the seller didn't want to deal with the poor condition it was in. I of corse saw it as a challenge - accepted !
So this 'basket case' unit will get a clean-up and we will see what we have.
Worst case, a unit to part out in Ebay (after I steal anything I need for my original project which has audio output issues) or... best case, a resurectable unit.
Addition videos's will drop as I clean and explore the condition of this basket case (look for 'RT-707 BC' in video titles)