Collectible coins encompass a variety of types, including commemorative coins, which are issued to honor specific events, individuals, or places. In the United States, the 50-cent silver commemorative coins, introduced in the 1890s, are particularly notable. The first of these, the Columbian Exposition Half Dollar, was struck in 1892 to celebrate the 400th anniversary of Christopher Columbus's voyage. These coins often feature unique designs and are sought after by collectors for their historical significance and silver content. The grade and condition of these coins are critical factors in determining their market value.