Collectible coins are often categorized based on a variety of factors, including denomination, historical significance, minting location, and material composition. The United States has issued numerous collectible coins, including the 50-cent denomination, commonly known as half dollars. Silver commemoratives were introduced to celebrate significant events, people, or themes in American history. The 1939 San Francisco half dollar, for example, was minted to commemorate the San Francisco World's Fair, showcasing unique designs and limited production numbers that enhance its appeal to collectors.

Item Denomination Series Year Mint
1939-S (San Francisco) Silver Commemoratives 50¢ (Fifty Cents) Silver Commemoratives 1939 San Francisco