Silver Eagles are one-ounce silver bullion coins produced by the United States Mint. They have been issued since 1986 and are made from 99.9% pure silver. The 1991 Silver Eagle is part of this series and is highly sought after by collectors and investors. These coins feature a depiction of Walking Liberty on the obverse and a heraldic eagle on the reverse. Due to their silver content and collectible appeal, they often command premiums over their melt value.