I would like to add to this a bit. My wife and I hunted with a former bowyer in South Texas who had what we all described as a "Fighter" knife. The workmanship was beautiful. But, there was no clue as to who had made it. He showed it to everyone he came in contact with, and, at last report, no one had a clue. A maker's mark would have been the answer, and probably more sales if the bladesmith wanted them.
Murray