1943 Copper Penny - Most 1943 pennies were made of steel due to copper shortages during World War II, but a few were mistakenly made of copper.
1969-S Doubled Die Penny - This penny features a noticeable doubling of the date and the words "Liberty" and "In God We Trust".
1972 Doubled Die Penny - Similar to the 1969-S, this penny has a noticeable doubling on the obverse and is sought after by collectors.
1999 Wide "AM" Penny - In this variety, the letters "A" and "M" in "America" on the reverse are farther apart than usual.
1982 No Mint Mark Dime - Most dimes have a mint mark indicating where they were made, but some 1982 dimes from the Philadelphia Mint.
1995 Doubled Die Penny - This penny has noticeable doubling on the obverse and can be worth several hundred dollars in uncirculated condition.
2004-D Wisconsin State Quarter with Extra Leaf - These quarters have an extra leaf on the corn stalk on the reverse.
2005-D "Speared Bison" Jefferson Nickel - This nickel has a die gouge that appears to "spear" the bison on the reverse, making it a valuable error coin.