Field found fine Indian stone axe full groove 5 1/4

Field found Indian stone axe 5 1/4" x 3 1/2", full groove, green granite material, well-made, symmetrical axe with awesome bit polish. No modern damage. Ancient ding to one side of blade (pictured), which was polished over in ancient times. Piece was found in Pike County IL. Purchased at a show in 2008. Modest reserve. 14-day money back guarantee on authenticity, less shipping.