2009,Schön-450, KM-450 Country United States Year 2009 Value 1 Dollar (1 USD) Metal Manganese-brass (Cu 88.5%, Zn 6%, Mn 3.5%, Ni 2%) Weight 8.1 g Diameter 26.5 mm Commemorative issue Presidential dollar coin program Obverse William Henry Harrison 9th president of the United States in 1841 and the first president to die in office. Lettering: WILLIAM HENRY HARRISON IN GOD WE TRUST 9TH PRESIDEN ...