United States silver dollar coins have been an all-time favorite among collectors and non-collectors alike. Just the size, weight and feel are some of the reasons for their popularity. The dollar denomination was another coin authorized by the Coinage Act of 1792. The Carson City Morgan dollars have been a prize in any condition for someone’s collection. Pretty much every United States Mint produced them with the following mint marks, “C”, “CC”, “D”, “O”, “P”, “S”, and “W”. If you are not familiar with all the mint marks, this would a nice way to learn them by assembling a United States dollar type collection.