What This Coin Looks Like (Obverse, Reverse, Mint Mark Location, Special Features, etc.): One major variety is the 1818/5 Capped Bust Quarter Error. This error features an 1818 date struck over an 1815 date which resulted in parts of the underlying "5" appearing within and around the last "8". These features are depicted by the arrows in the example image of the coin error above.
Coin Value Chart: Typical Coin Prices, Values and Worth in USD based on Grade/Condition