This arrowhead was found by me on my farm 10 years ago in north moniteau county, missouri, 400 yards from the missouri river and next to eagle bluffs. As I found the piece I can guaranty its original with 30 days to return the piece. Please feel free to contact me with any questions. Free shipping, insurance and mailed the same day or next by priority mail to U.S.. For international shipping information please contact me.I believe this to be a STILLWELL. It appears to be very nice and has maintained a very sharp point. The symmetry is a little off close to the point and the base. T is a slight edge nick 1 inch from the point and small tang nick on the other side. Also a small flake, 1/8 by 1/4 inch, missing as the patina is lighter 1/2 inch above the tang. The artifact measures 3 3/16 by 1 3/16 inches and check the pictures for how thin. The artifact weighs 15 grams. I was very happy to find such a clean piece and hope it would add to somebody's collection. The GP score I can't say.