Antique Rare "The Prince" Brace Wrench Combination Blacksmith Tool Pat.1909

Very Hard To Find Antique "The Prince" Combination Tool
I found this very old unusual tool at a gunsmith's estate sale. It is in amazing condition, but missing knob to adjust the jaws. I think it was modified to be used by this gunsmith. This originally had a brace handle that wasn't with the tool, nor could I find it anywhere at the sale. But the main part of the tool is in amazing condition. There are NO owner's marks anywhere. The jaws do adjust by hand rotating the screw.