Collectible coins encompass a variety of types, including historical, commemorative, and bullion coins. The United States Peace Dollar, minted from 1921 to 1935, is a notable example, featuring an image of Lady Liberty on the obverse and a soaring eagle on the reverse. The 1921 Peace Dollar is particularly sought after by collectors due to its significance in marking the end of World War I and its unique design by Anthony de Francisci. Collectors often focus on factors such as rarity, condition, and historical context when evaluating these coins.