Out of Knox or Vigo County, Indiana, probably twenty years in my collection--the Early Archaic MacCorkle measures 1&13/16" by 1&1/8"--3/8" max thickness at the center spot between the barbs--a slight 'stack' in the chalcedony. The point is more likely Stanford Chert than Holland Chert due to the west Indiana area where it was found--interesting white inclusions that Holland wouldn't have, either. The cleft in the base-center shows some degree of grinding, but not overly heavy ground. The needle tip would indicate use as a burin. Note that one barb was lost in a freeze-thaw, natural clefts, fissure lines in the material, suffered from water being trapped. Both of the flints mentioned have the same problem--if they're exposed to freezing flakes can exfoliate--part of the patination process. Every detail is lifetime guaranteed authentic--again, this one is coming out of my personal collection, it's REAL. Shipping is $5.00, checks or M.O.s are welcomed. Sorry, I do not use paypal--Roy A.