Right up front I'll admit I bought the piece from the estate of a local collector because I couldn't "type it"--the flint was the "Kentucky Blue" version of Sonora Flint, that one was easy (it outcrops at the northern end of Ft. Knox)--2&3/8" by 1&1/2", but the thinness is what makes the piece--3.5 sixteenths inch thick--that's REALLY unusual. The flaking is a mix of some percussion and pressure chipping, fine pressure-made edges--you wouldn't get so tiny-formed chips with a percussion technique. So, where does that leave the point in a 'cultural affiliation'? Benton Culture, the Mid Archaic (6500BP) people weren't known for snap base points (blunts, blunts, and MORE blunts--and parallel oblique flaking), so I do not time-scape the blade as Benton. Kirks, they were (quite likely) the biggest users of a snap base technique. Without a stem to give you more information on cornernotching I'm going to settle on Kirk unless someone presents a more compelling argument. The finder marked the piece as a Henderson County, Kentucky, find--it's real, regardless of how you want to 'type it'. Shipping is $8.00 with checks or M.O.s the ways I welcome-in payments. Sorry, I do not use paypal-type services--Roy A.