Collectible coins are items valued for their age, rarity, and condition rather than their face value. The United States has issued various collectible coins, including the three-dollar gold piece, which was introduced in 1854 and primarily minted for a short period. Buffalo Nickels, minted from 1913 to 1938, depict a Native American and a buffalo on the reverse, becoming iconic in American numismatics. The 1937 Buffalo Nickel is particularly notable due to its mintage figures and the distinct design elements. Specific variations, such as the "3-legged" buffalo, add to its appeal among collectors.