1882 Morgan Silver Dollar
A dual mint mark is another design mint mark re-punched over the original one. It could be the same branch like an S over another S or you can end up with something like the S in the center of the O. The 1882 O O/S has exactly that actually so far five varieties have been found with the 1882 Morgan Dollar from New Orleans.
1. S mint mark shallow under the O
2. S flush with the O
3. Broken S in the center of O
4. Line in center of O
5. Diagonal tear drop in center of O
approximately 150,000 were struck for each of those varieties.
1882 Silver dollar has a circulation strike of 11,100,000 this coin also has 1,100 proofs.
1882-CC Silver Dollar circulation strikes are at 1,133,000 and 0 proofs.
1882-O Silver Dollar circulation strikes 6,060,000 and 0 proofs. Sometimes you will discover this coin having a mintmark on the date often seen punched over a prior "s".
1882-S Silver Dollar circulation strikes 9,250,000 and 0 proofs. Very common in uncirculated condition coming from San Francisco you can find some great vibrant examples of this coin.
Next date 1883 Silver Dollar