The $20 Saint-Gaudens Double Eagles stand out as some of the most famous and desired US gold coins made before 1933. Created by the well-known sculptor Augustus Saint-Gaudens, these gold coins show a beautiful image of Lady Liberty on one side and an impressive flying eagle on the other. With nearly a full ounce of gold in them, they're not only the biggest but also the heaviest circulating gold coin from US history. Collectors and investors love these double eagles for their amazing design and important place in history.