In 1986, the United States began striking silver and gold bullion coins to compete with world bullion coins such as the Canadian Maple Leaf, the South African Krugerrand, and others. The value of these coins was intended to be tied directly to their metal value, although in some cases (where mintages were low) a collector market has developed. The bullion value of these coins far outstrips their face value. The obverse of U.S. gold bullion coins follows the artistic design created by Augustus Saint-Gaudens for the $20 Gold Double Eagles issued from 1907-1933. The design features Lady Liberty carrying an olive branch and a torch.