Green/Gray Stone Sumerian Amulet Duck

Green-grey stone amulet in the shape of a duck (or similar bird type). The amulet displays incised contour lines about a third of the way along the body from the tail. Stone appears to be patterned with faint crosshatching, which may be the natural surface of the stone. Circular hole is pierced in breast of figure close to the edge, probably so that amulet could be worn as a pendant.