Here are some factors that can affect the value of a 1890 Morgan dollar coin:
* Condition: The condition of a coin is one of the most important factors in determining its value. A coin that is well-preserved and free of damage will be worth more than a coin that is worn or damaged.
* Rarity: The rarity of a coin can also affect its value. Some varieties of the 1890 Morgan dollar are rarer than others, and therefore more valuable.
* Mint mark: The mint mark on a coin can also affect its value. Coins minted at certain mints are rarer than others, and therefore more valuable.
* Numismatic value: The numismatic value of a coin is the value that it is assigned by coin collectors. Numismatic value is based on a variety of factors, including the coin's rarity, condition, and historical significance.
If you are interested in selling a 1890 Morgan dollar coin, it is important to have it appraised by a professional coin dealer to determine its value.