"Don't expect to ever have this functioning again. Ever. Someone's had a "play" with it, meaning, half the logic is blown sideways, and the other half, well, good luck with that."
The sort of people paying 6 figures for a bit of computing history are NOT going to be powering up 40* year old hardware just to see if it still works. It will be going in a glass case.
[*] Near as dammit. Original electrolytic caps? I'd not want to power that up if I just paid 1/2 mill for it.