The letter “O” found on the reverse of a Morgan silver dollar indicates that the coin was struck at the New Orleans Mint. This mark, placed below the eagle and above the letters “DO” in “DOLLAR,” serves as a key identifier for collectors and numismatists. For example, a Morgan dollar dated 1884 with the noted mark signifies it originated from the specific branch mint located in New Orleans.
Identification of the mint location is important for determining a coins rarity and, consequently, its potential value. Dollars produced in New Orleans often exhibit unique characteristics due to the mint’s operational practices and environmental conditions. Historical context further enhances the significance, reflecting the economic and political landscape during the coin’s production era, particularly within the Southern United States.