Collectible coins encompass a wide range of types, including commemorative pieces, error coins, and bullion coins. The United States has a rich history of collectible coins, with notable examples such as the three-dollar gold piece, originally minted for use in high-value transactions. Buffalo nickels, minted from 1913 to 1938, feature an iconic Native American profile and a bison, making them highly sought after by collectors. The 1917 issuance of coins marks a significant year in U.S. numismatic history, as various denominations were minted, reflecting the economic conditions and artistic choices of the era.