Collectible coins, particularly those from the United States, often include a variety of denominations and types. The "Two and a Half Dollars" refers to the quarter eagle coins, which were minted in gold. The Gold Commemoratives issued in 1915, such as the Pan-Pacific Exposition commemorative coins, are notable examples that celebrate significant events or individuals in U.S. history. These coins are highly sought after by collectors due to their historical significance, design, and precious metal content, impacting their market value.

Item Denomination Series Year Mint
1915-S $2 1/2 Panama-Pacific Expo $2.50 (Two and a Half Dollars) Gold Commemoratives 1915 San Francisco
1915-S (San Francisco) Gold Commemoratives $2.50 (Two and a Half Dollars) Gold Commemoratives 1915 San Francisco
United States of America 1915 Philadelphia Gold Commemoratives $2.50 $2.50 (Two and a Half Dollars) Gold Commemoratives 1915 Philadelphia