Right at the middle of the hafting area the blade reaches its thickest spot--1/4"--for much of it's length the blade is even thinner, 3.5 sixteenths inch thick. Why was it made so thin, it doesn't seem like a knife so thin would hold up, but both barbs are on, the tip is intact. Yes, a small 'divot' is there on the upper blade edge, and it looks like a small edge 'touch up' was made on the lower blade, opposite the divot side. The small basal corner clip, I'm not convinced that was damage, but rather a "not enough flint to finish it out" spot--the corner is so flat (angled), and shows no edge fracture chips as you'd see if it was damage. Now one factor that complicates classifying the piece as a Kirk Cornernotch: the base is very well ground--so, the question then--is this more of a Stage One Lost Lake, pre bevel sharpening? The quality of the flaking could lead you into either classification, but Kirks, their use of basal grinding was so hit-or-miss, I lean toward this being a 'never sharpened' Lost Lake. Out of Webster County, Kentucky, the hornstone blade is 2&9/16" by 1&5/8"--it's real, period. Shipping is $7.00, checks or M.O.s are the payment forms I accept. Sorry, I never use paypal-type payment services--Roy A.