The $50 One-Ounce American Gold Eagle was designed by Augustus Saint-Gaudens(obverse) and Miley Busiek(reverse). Weighing 33.931grams and composed of .9167 gold .03 Silver, .0533 copper (netting 1oz gold). These coins are 32.7mm in diameter, have reeded edges and are produced in both an Uncirculated and Proof version.