The first penny was 100% copper, per the U.S. Mint. Then, in 1856 the “Flying Eagle” scent started production with 88% copper, the American Plating Company says.

Explore More: 4 Kennedy Half Dollar Coins That Are Worth Up to $150K 1922 No D Lincoln Penny Current estimated value in mint condition: $25,000 Auction record: $57,500 The 1922 No D Lincoln penny ...

Mint marks are the letters on the face of the coin that indicate where the coin was made, like “P” for “Philadelphia.” But that’s not the only thing to peep.

1914-S Lincoln Penny Current estimated value in mint condition: $13,375 Auction record: $105,800 The 1914-S Lincoln penny was issued from the San Francisco Mint.

1922 No D: The Denver Mint was the only one to produce pennies this year, but some were mistakenly minted without the “D” mint mark. Collectors highly seek after these.

1944 Steel Penny: The 1944 steel penny is one of the rarest, most sought-after American coins in the world. Like the 1943 copper penny, it was struck using the wrong planchet. By 1944, the U.S ...

In general, a steel penny in average condition is valued at 10 to 25 cents. An uncirculated coin can fetch between $1 and $5. However, 1943 pennies in exceptional condition (graded MS 67 or above ...

Over the past 167 years or so, when the U.S. Mint struck its first smaller-sized penny, there have been numerous varieties, errors, grades, mis-strikes, mint marks and more that have affected ...

Americans may have pennies worth hundreds of dollars hiding in their piggy banks. Depending on the year, mint and condition, a Lincoln Wheat penny can be valued anywhere from several hundred to ...

A 1974 Eisenhower silver dollar in Wolfforth, Texas, on May 18, 2012. Eisenhower coins with no mint marks can be worth as much as $13,500 on the coin collectors market. Stephen Spillman/Lubbock ...