That four-sided-bevel sharpening that characterizes the Kirk Culture--made from what sure looks like Indiana Derby Chert (Perry County creeks),2&1/16" by 1&3/16", the blade edges showing some finely made small serration. The thickness at the tip (almost 5/16") would indicate a much longer blade as it was first made. Patination on the tip cuts into the flint (chalcedony) more than the 7500 BP hunter would have made, so I'm under the impression the piece was reused by a later culture--it is NOT new chipping, though, but a Woodland period hunter could have found and repaired what was a damaged tip for use. One interesting note here is that the basal edge shows pretty good grinding, more what you'd expect from a Lost Lake than a Kirk. Authentic point, just shows two different cultures used it. Shipping is included, no extra costs; checks, cash, or M.O>s welcomed. Sorry, I do not use paypal--Roy A.