From the New Albany, Indiana, area, a collection that--as far as what was in it--was found along the Ohio river--a lot of work flint in addition to some decent Benton Culture (Mid Archaic, 6500BP) blades. The material is Jeffersonville Chert if my identification is correct, length is an excellent 3&11/16" by 1&7/16", with 3/8" the medial ridge thickness--Benton hunters liked larger hafted knives, this one a good example. The basal edge is not ground (not their finish-out technique, but the sides of the stem have strong grinding (they should)--the tip was considerably thinned to get a sharp point, something that was necessary as the blade started out even longer--there is almost a bevel that resulted from repeated sharpening, so I suspect the blade started in the 6" (or so) length--the closer the edges got to the medial ridge the harder it was to get a thin tip. Put the tip under a 10x loop and you see the mineralization, it tells you the tip work was ancient. Note on the stem there are a pair of 'pockets' of quartz crystals--"vugs"--cavities--as geologists term them. Neat piece, REAL. Shipping is $8.00, checks or M.O>s are welcomed here. Sorry, I do not use paypal-type services--Roy A.