I don't have any ideas, but I see old wrecks in the woods occasionally that are Internationals. They are not in that good of shape. That cab is in decent shape and may fetch a bill if someone is looking for one. My guess that it could have been a work truck cab from the 30s.
Chad, Possibly a 1950-1955 model, based on the single piece front windshield and the split rear window. If you can salvage it, I am sure someone will buy it off of you! Happy Hunting, Sub