Collectible coins, particularly in the United States, encompass various denominations and designs introduced over time. The 1 One Cent Penny is a notable denomination, with the Coronet Head Cents being minted from 1816 to 1857. The Coronet Head design features a portrait of Liberty wearing a coronet, making it a sought-after type among numismatists. Specifically, the coins from the year 1820 are of interest for their historical context and potential rarity.