1: The 1955 Double Die Lincoln Cent is a valuable error coin known for its doubled features.

2: The 1943 Copper Penny is a rare mistake with only a handful known to exist.

3: The 1944 Steel Penny is another error caused by the wrong metal used in production.

4: The 1937-D 3 Leg Buffalo Nickel is a famous coin created from a die polishing error.

5: The 1982 No Mint Mark Roosevelt Dime is a scarce coin without a mint mark.

6: The 2004 Wisconsin State Quarter with an extra leaf is a unique mistake coin.

7: The 1970-S Proof Lincoln Cent with a doubled die is a valuable error coin.

8: The 1999 Wide AM Lincoln Cent features a wider space between the A and M.

9: The 1969-S Doubled Die Lincoln Cent is a sought-after error coin with visible doubling.