A 1943 steel wheat penny with a D mint mark in mint state with a MS+ certification by a top coin grading company is worth approximately $12 in an auction. A coin of average condition is worth approximately 45 cents.
A coin of average condition means the penny is in a similar state to other steel wheat pennies issued in 1943. Depending on the condition and who is buying and evaluating it, the penny may vary in worth between 45 cents and $12. If the 1943 D steel wheat penny is in good condition and contains a double die error, meaning it contains a double stamp of the year, it is worth up to $1300. Due to a lack of copper during World War II, the U.S. government issued steel pennies with a zinc coating to replace the traditional penny.