depends what kind of coin.
O stands for Orleans, New
In condition order: 25,35,115,750
In condition order: 25,35,115,750
its fake o silver dollars were made in 1799
Need a date to go with the O a lot of coins have O mint marks...... 1888
As of 4/12 a 1898 O Morgan silver dollar in MS-65 condition is worth $238.
The O means it was struck in New Orleans, value runs from $20.00 to $30.00 in circulated condition.
Retail is $15-17 in average condition.
Average market value is $170.00 for a certified MS-64 example.
$200
There was no 1999-O dollar minted. The O mint mark signified the New Orleans Mint, which closed down 90 years earlier. The only dollars minted by the US Mint were the Susan B. Anthony dollar, which contained no silver at all, and the American Silver Eagle, which contained roughly 1 oz. of silver.
The 1881-O Morgan Dollar is common, average retail value is $25.00-$35.00 for a example in circulated condition
The 1885-O Morgan dollar is common, in general values are $32.00-$38.00 depending on grade.