The 1943 copper penny is a rare U.S. coin, mistakenly minted in copper during WWII.
Most 1943 pennies were made of steel, due to copper's importance for wartime materials.
A few copper blanks from 1942 were struck by accident, creating the rare 1943 copper variant.
Authentic 1943 copper pennies can be worth up to $100,000 or more, depending on condition.
Experts suggest less than 40 of these coins exist, making them extremely valuable to collectors.
To verify authenticity, the coin should weigh about 3.11 grams and not stick to magnets.
Professional grading services can certify a 1943 copper penny's authenticity and condition.
Reproductions and fakes are common, so buyers should be cautious and seek expert advice.
The coin's value is influenced by its historical context and the story of its accidental minting.
Collectors treasure the 1943 copper penny as a unique piece of American numismatic history.