Rare Native American Artifact in Lynchburg, VA

Rare native American artifact! Will sell or trade for (4) one oz. gold bullion coins; either gold eagles of Canadian Mapleafs or older "double eagle" coins with $20 face value. This 8' long piece was purchased from an estate sale in the SW part of Virginia perhaps 20 or more years ago...The only "provenance" was a label that indicated it was found in Stoddard County, Missouri...My research shows it to be identical in material and workmanship to one found in the Nov. 2010 edition of Indian Artifact Magazine, in the Creme de la Creme section. The magazine was and still is, edited and published by Gary Fogleman. (see the two attached photos of IAM magazine). This piece also appears to be identical to one pictured in OverStreet's Identification & Price Guide for Indian Arrowheads; 11th edition...In Overstreet's it's called a "Cresap" and it's value, if graded as a "G-10" is $1,000 to $1,800 ! (see two more attached photos from Overstreet's). Artifact collectors might ask if this piece has been "authenticated"? If you respond with any interest, i will gladly discuss the pitfalls of the so-called "authentication" process! That being said, each of the small pieces of blue painter's tape points to crevices on both sides of this piece, that have microscopic crystals visible. Yes, artifacts can be "flint-knapped" and passed off as "genuine" to an unsuspecting buyer, however, a modern flint-knapper can't make crystals, that are microscopic in nature, grow in minute crevices! If interested call by phone. [removed phone]-XXXX