First one is small, 11 1/2 inches overall with 7 inch sweep. Unconventional bit holder and no markings whatsoever. First 4 photos marked OLD.
Second one is marked MADE IN JAPAN only and has an 8 inch sweep and an unconventional pad. Second 4 photos marked JAPAN.
Third one is marked ONIX only and has a 10 inch sweep. Third 3 photos marked ONIX.
Any identifying makers and when made will be greatly appreciated