A 1944 D penny features the Lincoln wheat penny design and was minted in 1944 at the Denver mint facility. The D is the coin's mint mark, which indicates the production site. A 1944 D penny may be worth between 15 cents and $6, as of 2014.
Some 1944 D pennies contain a mint mark error with an S mark over the D. These pennies are more rare than the regular 1944 D pennies and may be worth between $100 and $500, depending on their condition. The coin features a bust of Lincoln on one side and grains of wheat on the other.