Where is the y mint mark on a 1948 penny?

On a 1948 penny, the "Y" mint mark, which indicates that the coin was produced in Philadelphia, is located on the reverse side of the coin, specifically to the right of the wheat stalks. However, it's important to note that pennies minted in Philadelphia during that year do not have a mint mark at all. Only those minted in Denver will have a "D" mint mark, while those from San Francisco will have an "S."