The Liberty Head Double Eagle is a $20 gold coin that was produced by the United States Mint from 1849 to 1907. The design features a head of Liberty on the obverse and an eagle with a shield on the reverse. The 1865 Liberty Head Double Eagle is particularly noteworthy, as it falls within a period of high demand for gold coinage during the California Gold Rush. These coins are highly sought after by collectors for their historical significance and gold content.