The "O" stands for the New Orleans mint. The 1884-O is a common date Morgan Dollar and your coin is circulated and cleaned and is worth silver melt value.
I think your question is, is it Mint State? If that is the question, it is not. It looks more like a VF-30 or Very Fine 30 to me.
Morgan silver dollars were produced from 1878-1904 and then again in 1921. From 1878 to 1904, mintmarks were used for the branch mints at Carson City (CC), New Orleans (O) and San Francisco (S), but no mintmark was used for the main mint at Philadelphia. In 1921, the only mints that produced the Morgan dollars were Denver (D), Philadelphia and San Francisco. Chris
Sorry for confusion...Im not familiar with the coin hobby terminology...I was trying to ask what is considered a mint state and whats not a mint state...also stupid questions need to be asked sometimes for clarification
I would bet that there is not a single member of the forum have never asked a "stupid" question before so don't feel bad despite the fact people like to point out when others do it. Mint state as defined by the Red Book: "The term Mint State and Uncirculated are used interchangeably to describe coins showing no trace of wear. Such coins may vary to some degree because of blemishes, toning, or slight imperfections."