This is an authentic Emerson Knives Bullnose Karambit Serial #040. These knives are sought after and hard to get. It has the patented "wave feature" that allows it to open on its own as you draw the knife while it is clipped in your pocket. It works with no springs so it is legal. A hook on the top side of the blade catches the edge of your pocket as you draw the knife. I paid over $230 and will sell for $200 shipped. Here is a link to Earnest Emerson's web page: http://www.emersonknives.com/TheKnives_Tact.html I ordered it a long time ago and it showed up today at my local dealer. I have no use for it. Thanks for looking guys.