The Liberty Head Double Eagle is a gold coin issued by the United States Mint, featuring a design by Augustus Saint-Gaudens that was produced from 1849 to 1907. The 1861 Liberty Head Double Eagle, with a denomination of twenty dollars, is notable for its rarity and historical significance, particularly due to the tumultuous events of the American Civil War during that year. These coins are composed of 90% gold and 10% copper, weighing 33.44 grams and measuring 34 mm in diameter. Collectors often seek these coins for their numismatic value, historical context, and precious metal content.