2011,KM-506 Country United States Year 2011 Value 1/2 Dollar = 50 Cents (0.50 USD) Metal Copper-Nickel clad Copper Weight 11.34 g Diameter 30.61 mm Commemorative issue United States Army Obverse This design represents significant contributions of the U.S. Army during peacetime and features a U.S. Army soldier surveying, two servicemen building a floodwall and a Redstone Army rocket used durin ...