Its a puzzlement. could be old, could be new, could be from several different places/times/cultures. without a close detailed examination its hard to do more than guess, and even with that it might remain a puzzle.
Those studs on the grip, still make me wonder. When you hold the knife in a using grip for heavy cutting, hacking, or various combat grips, any task a large knife might be put to; is it comfortable in the hand?
One more question, when looking at the cutting edge angles, with a magnifying glass, does it look like the blade had ever been resharpened. usually an old knife that has been hand sharpened will show several differing angles to the cutting edge