During World War II, due to the shortage of copper, pennies were minted from steel with a zinc coating. However, a small number of pennies were mistakenly struck in copper. These rare 1943 copper pennies can be worth over $200,000 if found in pocket change.
This variety of the 1955 Lincoln cent features a noticeable doubling of the lettering and date. If you find one in your pocket change, it could be worth upwards of $1,000 or more depending on its condition.
Similar to the 1955 Doubled Die, the 1969-S Lincoln cent exhibits noticeable doubling on the date and other parts of the coin. If discovered in pocket change, it could fetch over $200,000.
Some 1970-S Lincoln cents were minted with a smaller date font. These are quite rare and can be worth thousands of dollars, especially in high grades.
A few 2004-D Wisconsin state quarters were struck with an extra leaf on the cornstalk. This variety is highly sought after by collectors and could be worth well over $200,000 if found in pocket change.
This variety of the 2005-D Jefferson nickel features a die gouge resembling a spear running through the bison on the reverse side. It's a rare find and can command significant value, potentially exceeding $200,000.
In 2007, a small number of Washington presidential dollars were struck with noticeable doubling on the obverse side. Finding one of these coins in pocket change could yield a substantial return, possibly over $200,000.