Where is the mint mark on an quarter?

The mint mark on a quarter is typically located on the reverse side, just to the right of the eagle or design element, depending on the specific quarter series. For example, on the state quarters, the mint mark can be found near the bottom, often between the engraving and the edge of the coin. In some older quarters, such as the Washington quarters, the mint mark may also appear above the "D" in "Dollar."