The Liberty Head Half Eagle, struck in the United States from 1839 to 1908, features a design by Christian Gobrecht. The 1851 edition is particularly notable among the series, with a composition of 90% gold and 10% copper. Each coin has a face value of five dollars and weighs approximately 8.36 grams. Collectors seek these coins for their historical significance, gold content, and varying mintmark releases, which impact their rarity and market value.