Wheat pennies vary in worth depending on the condition of the penny and the year in which it was minted. As U.S. currency, all wheat pennies are worth at least 1 cent, but rarer coins minted with anomalies or in limited runs are worth substantially more.
According to The Fun Times Guide, the Denver Mint released a small amount of wheat pennies that were missing their "D" stamp indicating where they originated. This "plain" wheat penny can be worth up to $900. Most wheat pennies minted during the 1950s are usually worth 10 cents or less. To learn the value of a coin, have it assessed and graded by a professional rather than referencing a coin guide, as some tell-tale marks that suggest increased value are additions by forgers and scam artists.