Mint Marks Show Location – Coins in the U.S. are made at different mints like Denver (D), San Francisco (S), Philadelphia (P), and West Point (W).
Some Are Rare – Coins from certain mints, like Carson City (CC), were made in small numbers and are worth more today.
No Mint Mark Can Be Special – For example, early Philadelphia coins didn’t use a mint mark, and some of these are now very valuable.
Mint Marks Affect Value – A 1921 Morgan Dollar with a "D" mint mark can be worth more than one without it.
Mint Marks Moved Around – Over time, the position of the mint mark on coins changed. That helps date coins more exactly.
Proof Coins Have Unique Marks – "S" or "W" mint marks often show a coin is a proof, made specially for collectors.
Collectors Love CC Coins – Carson City coins are popular because they were made in the Wild West era and are scarcer.