I picked up the frame today, I'll post up what I know for anyone else who might find one some day!
LOOK cyclocross frame, not sure the model because the original decals are missing but it's very similar to the Mi60/Mi80/Mi90 so I'm guessing it's early 90's. This one measures 56cm top tube center to center and seat tube measures 52cm center to center.
It's made with precisely mitered, internally brazed triple butted tubing, however there are no indications that the fork is made with Ritchey tubing like their mtb frames.
It also has short, horizontal dropouts with adjustment screws instead of the vertical dropouts on the mtb frames and the seat stays are noticeably thinner than the mtb frames.
The bottom bracket is 68mm english threaded and the headset is also standard 1" threading.
The seatpost diameter is 26.2 and it's made for 700c wheels. Geometry wise, it's pretty similar to my modern cross frames with a higher bottom bracket, and medium wheelbase.