Illinois Commemorative Half Dollar 1918 AU 58 ANACS Silver SKUI22151 September 28, 2025admin Illinois Commemorative Half Dollar 1918 AU 58 ANACS Silver SKU:I22151. A genuine 1918 Illinois Centennial Commemorative Silver Half Dollar Coin, graded and certified AU 58 by ANACS. The images you see are for the exact item you will receive.