n a fashion the corners of the base are slightly notched, similar to the way Morrow Mountain points/ knives were made. But, while Morrow Mountains were well represented on sits along the Ohio River, Spencer County's Crib Mound for one, for a similar blade to be found in Green County, Indiana, would be the first I've heard of. The patina of the 2&1/2" by 1&13/16", only 1/4" max thickness blade is absolutely, positively authentic. The blade edges are finished-out in pressure chipping--you can easily see how parallel they are. If the blade wasn't so thin I'd say it was bevel sharpened (see the photo showing the edge from the tip downward to the base). Note the center of the base, the knapper built almost a 'platform' for a thinning flake running up the face--why he did so I can't answer, but there had to be a purpose for not totally thinning that basal edge--if there IS any basal edge dulling it's very minor. One more 'note'--the thinness of the blade also brings in Decatur Blades as a "Could it be...", but then why notch the outed corners--were those only 'preliminary' to the building of a Fractured Base Point? Interesting piece ! Shipping is $9.00, checks or M.O.s are the ways to buy the piece. Sorry, I do not use paypal-type services--Roy A.