What this coin looks like (obverse, reverse, mint mark location, special features, etc.):
One major variety is the 1818/7 Capped Bust Half Dollar Overdate error with the "Large 8". This variety features an 1818 date struck over an 1817 date in the die which resulted in an "8" over "7" overdate on the coin. Parts of the underlying "7" can clearly be seen near the top of the "8". This variety also features a larger "8" (the first number "8" in the 1818 date). The difference between the 1818 Small 8 Vs Large 8 Capped Bust Half Dollar is depicted below in the example comparison image:
Coin valuation chart: Typical coin prices, values and worth per grade or condition - in USD