Thank you for contacting Mearto with your appraisal inquiry. Based on the photographs and description provided, the subject of this appraisal is an 1957 United States Lincoln/Wheat Ears Reverse Penny originating from the Philadelphia Mint. The penny is in circulated condition, likely if graded in the Extremely Fine (EF) range.

Coins that were minted at the Philadelphia Mint prior to 1979 (except for 1942-1945 Nickels) do not have a mint mark. In 1957 over 282 million such pennies were minted in Philadelphia, and over a billion pennies were 1957D Pennies (originating in Denver).

Unfortunately, this wheat penny is not particularly rare. The book value on 1957 wheat pennies in an EF grade would be $.03. Even in proof uncirculated condition (without any blemishes or flaws and completely reflective), the value would be approximately $3. Fair Market Value of the piece is approximately $.03 to $.05.