A new friend of mine just opened an indoor Radio Control Race Track. He found out I was into vintage computers and told me when he bought the warehouse the rack is now in there were 5 vintage macs stuffed in a corner. Turns out he has an original 128k, two 512ks, a Plus, and an SE. None have power cords, keyboards, or mice. I told him the 128K may be worth something substantial and the 512s may be worth something. He offered me two of my choice so I took the two I can test with an ADB keyboard and mouse. I have no way of testing the three oldest. One of the computers has a Dartmouth University computer inventory tag on it. The town the warehouse is in is just a few miles from Dartmouth so maybe someone bought these from Dartmouth and stuck them in the warehouse.
I may try to get a keyboard and mouse for him at some point. I guess they are kinda rare.