Modern commemorative coins, such as the 50-cent pieces issued by the United States, are often released to honor significant events, individuals, or themes. The 2015 San Francisco 50-cent coin is part of this series, showcasing intricate designs that celebrate American heritage and achievements. These coins are minted with a limited number of pieces, making them collectible for numismatists and enthusiasts alike. Their value often increases based on factors like rarity, condition, and demand among collectors.