John Reich designed this capped-head concept of Liberty, and it was modified by Chief Engraver of the Mint, William Kneass. It proved to be a popular design and lasted from 1807 to 1839 on the half dollar, 1815 to 1838 on the quarter, 1809 to 1837 on the dime, and 1829 to 1837 on the half dime. All four of these coin were struck in 89.2% silver and 10.8% copper.