Up at Apex today, this is what I saw, part 1:
http://wps.com/temp/CMC1.jpg
http://wps.com/temp/CMC2.jpg
http://wps.com/temp/CMC3.jpg
It's a 12-bit machine, but big odd non-DEC-looking boards. It's
7400 TTL, with 1974 and 1973 dated-coded chips.
Both machines are ruined. Sacked in mud, probably for a decade.
Little rust though, looks like damp, then blown-in dust or silt.
Boards are possibly recoverable.
No memory or any accessories within 10 feet, I think they were
buried under junk and just unearthed (Don is going through the
yard).
The switch register is 12 bits, and a LINK light, so I assume
it's a pdp8 clone. Could be wrong of course.