Collectible coins, particularly modern commemorative coins, celebrate significant events, places, or individuals in United States history. The $10 Modern Commems are gold coins issued by the U.S. Mint, specifically designed to honor various themes and anniversaries. The 1984 Philadelphia commemorative coin was part of the series that highlighted the 1984 Summer Olympics held in Los Angeles, California. These coins typically feature unique designs and have limited mintages, making them appealing to collectors.