The 1891 Seated Liberty Quarter is a circulated silver coin minted by the United States in 1891. This particular quarter was struck in Philadelphia and has a fineness of 0.9. It is an ungraded coin that has not been certified, making it a unique piece for collectors of US coins. The Seated Liberty design on the obverse reflects the historical significance of this era in American numismatics, while the 25-cent denomination adds to its value and appeal among coin enthusiasts.