As Greenbrier points go this one is extra large, caliper reads it at 3&1/4" by 1&5/16", with thickness slightly over 5/16". I'm not sure it needs mentioning, but the shaft scraper indented on one blade edge is ancient workmanship--you can feel work polish. The very early Early Archaic Culture Greenbrier makers needed a multi-purpose tool, not just a knife, so this is the modification they made. I wouldn't, but someone (some other collector) might have the shaft scraper professionally repaired--I think you'd lose some of the provenance there, but collectors differ on how they want to display their artifacts. History: the piece was in Dr. Skaggs Evansville, Indiana, collection, and has spent the last half-dozen years in my frames. The Doctor bought points from a collector who hunted McLean County, Kentucky, and without any other tags of collection catalog to tell me different, that's the provenance I place in my own records. Other damage is very limited, a slight nick off the very tip--it also looks like it was from the many-thousand year past work life--and you can see minor ancient knifeblade tip repairs--that's USE, not damage. Basal and lateral edge grinding is extra fine. Here is my very simple guarantee: so long as I'm alive the piece is guaranteed authentic--try beating that. I pay the shipping, and as a buyer you can pay by check or money order--no other payment forms taken--Roy A.