Do you have any keyboards or M cases with the manufacture date of 8/15/1991 or 8/26/1992? I'd love to buy one!
I have 3 beige Model M-122 cases dated:
07-16-91
10DEC91
13-FEB-95 (Lexmark)
and 2 beige standard cases dated:
08-22-91
13-FEB-96 (Greenock with "Bad" written in marker on the label)
and a "faux-camo" (perfect working order and bolt-modded) that my son and I painted dated:
10-11-91
plus an M2 that will not boot and is missing the numpad "0" key dated:
19NOV92
I am expecting 2 more M-122s in the mail in the next few days:
04-30-90
29-NOV-94 (Lexmark)
Don't get excited about controllers. The reason that these are on the junk pile in the first place is because they were DOA, and the controller is just about the only thing to go bad.
The M-122s are probably all OK, electronics and all, I pretty much only bought them to harvest key caps. Most of them are little used and would provide a mountain of clean fresh springs.