The Capped Bust Quarter, produced from 1815 to 1838, is a notable series of quarters minted in the United States. Featuring a profile of Liberty wearing a cap on the obverse and an eagle with a shield on the reverse, these coins are considered significant in American numismatics. The 1815 issue, in particular, is sought after by collectors due to its lower mintage and historical context, making it a key date in the Capped Bust series. Collectors often focus on factors such as condition, rarity, and provenance when evaluating these coins.