Unfortunately no ID tag. However, the gearbox will according to the seller to be completely renovated, and it seems true when I check it. All axes are new. And the gears looks new to.
Very nice machine work! There may be a partial VIN stamped on the top left edge of the main case that may be a clue. There should also be casting numbers on the main case and tail housing that may also be clues as to what the transmission is. Good Luck, Chuck