Stone axe head, 3/4 grooved, graphite and green color, Pre-European contact, grooved axes are thought to be early, Native American, collection history to Illinois. $250.00. #1118. 4 1/2" x 3". Stone axe head, 3/4 grooved, Pre-European contact, but grooved axes are thought to be earlier, Native American, greater Southeast US. $295.00.