The Saint Gaudens Double Eagle is a gold coin issued by the United States from 1907 to 1933, featuring a design by sculptor Augustus Saint-Gaudens. The coin has a denomination of $20 and is highly regarded for its artistic qualities and historical significance. The 1921 Saint Gaudens Double Eagle is particularly notable as it represents a period of transition in U.S. coinage and carries a higher collectible value due to its rarity and condition. The obverse depicts Lady Liberty and the reverse showcases an elegant eagle in flight, making it a favorite among collectors and investors alike.