Modern commemorative coins in the United States, particularly the 50-cent pieces minted in 1982 at the San Francisco Mint, celebrate significant events, individuals, or themes. These coins are typically issued in limited quantities and feature distinctive designs that highlight their commemorative nature. The 1982 half dollar commemorates the 250th anniversary of the birth of George Washington, showcasing his legacy in American history. As collectibles, these coins attract numismatists due to their artistic value, historical significance, and potential for appreciation in value over time.