The Capped Bust Quarter coins were minted between 1815 and 1838.
They are most likely called “capped bust” because the bust on the obverse or front of the quarter has a cap on its head with the word Liberty written on it.
These Bust quarter coins were eventually replaced by the Liberty Seated Quarters in 1838.

Note: Posted prices are for REFERENCE ONLY. Exact prices depend on dates, condition and current market. Better dates pay more.