- P: Philadelphia Mint in Pennsylvania.
- D: Denver Mint in Colorado.
- S: San Francisco Mint in California.
- W: West Point Mint in New York (used for commemorative coins and bullion coins).
- CC: Carson City Mint in Nevada (Used from 1870 to 1893).
- O: New Orleans Mint in Louisiana (Used from 1838 to 1909).
- C: Charlotte Mint in North Carolina (Used from 1838 to 1861).
- **DAHL*: Dahlonega Mint Georgia (Used from 1838 to 1861)