This is a 14" long blacksmith type tool and it is Keen Kutter brand as it has the logo on the handle E. C. Simmons Keen Kutter. I do not know what it was used for sure and have not taken the time to look up in catalogs. I bought it to keep only to find I already had one.
I am thinking it might be a shoe stretcher. Weight unpacked is 1 pound 14 ounces. Buyer to pay s/h calculated in USA. Email with questions.