The Seated Liberty Half Dollar is a type of US coin produced from 1839 to 1891, featuring a depiction of Lady Liberty seated on a rock, representing freedom. The 1854 issue falls within this series and is characterized by its design elements, including the Liberty figure and various mint marks based on its origin. This coin has become a collectible due to its historical significance and varying mintage numbers. Collectors often seek it for its numismatic value and the rich history associated with the design and the era in which it was minted.