Once Again, it's time to play.
Lets go:
Number on back is 80 904D Missing one transistor, someone penciled in what looks like 2N4125.
Sticker on front has date 3/20/81. Couple of burned away traces on the back, looks like too much current to ground. Reapairable easily with wire though IMHO. Back Says "Midway MFG. Co, Power Supply -RX A084-90414-B935." Looks good and complete other than burned traces issue.
"Assy number 41P0020-000." Both complete and in at least good shape.
Dirty, one component missing. Look where that cleaned spot is. :) Says "Vesiel V91-B Rev A 92-23" 2 small jumper repairs on back.
IMCO Control Board2 Rev 1. Paradise Valley Electronics. CTRL2 R1 8/13/93. Missing a crystal, the dips that were in the socket. I stole the crystal, you can have it back. It was an 11.0592Mhz. Otherwise excellent shape. I have actually the Dallas Semi clock that went in one of the DIPS. Has a "Program / Run" switch on the PCB.
Make an offer if you want one, I sold the Williams System 4 CPU for what the guy offered.
Otherwise, satisfy my curiousity at least. :)