The 2009 Gold Eagle coins, specifically the five-dollar denomination, belong to the American Gold Eagle series issued by the United States Mint. Struck at the Philadelphia Mint, these coins contain a fraction of an ounce of gold and are composed of 91.67% gold, 3% silver, and 5.33% copper. The design features Augustus Saint-Gaudens' iconic portrayal of Lady Liberty on the obverse and a family of eagles on the reverse. Due to their gold content and collectible appeal, these coins are popular among both investors and numismatists.