Shipping comes with the list price on this Union or Webster County, Kentucky, creek find. The Kirk is so stained by some 7500 years of creek patina that deciding if it's a form of Hornstone is a challenge. In some ways (inclusions) it looks like hornstone, yet some of the fracture planes would suggest a different flint--good gloss, 3&1/4" by 1&9/16", yet only 5/16" max thickness. The stem of the Cornernotch was snapped, salvaged, and then heavily ground smooth. One note here, it's also possible that to get the maximum length from his hafted knife the knapper might have never had enough flint to finish the stem, he worked to the edge of the starting preform/ flake--the way it's ground so smooth (for a Kirk) makes me wonder if there was ever a full stem. I've never tried to clean the blade so there may be some creek soil still on it--patina, the look, I didn't want to see any dirt would come off. Personal preference. Note, too, that the tip has use--and a small impact fracture, a very small channel fracture leading down from the worn tip. Good flint, good workmanship, and great patina, every detail is lifetime guaranteed real. I welcome checks or M.O>s however I do not use paypal--Roy A.