Collectible coins are items sought after for their aesthetic, historical, or intrinsic value rather than for general circulation. In the United States, the 50-cent denomination often features commemorative designs, and silver commemoratives like those issued in 1915 celebrate significant events or individuals. The 1915 San Francisco International Exposition commemorative half-dollar is a notable example, minted to honor the 1915 Panama-Pacific International Exposition, and contains 90% silver, making it highly prized among collectors.

Item Denomination Series Year Mint
1915-S (San Francisco) Silver Commemoratives 50¢ (Fifty Cents) Silver Commemoratives 1915 San Francisco