The actual term is mint mark; all coins have a "mint" because that's where they were made. However most U.S. coins made in Philadelphia before 1980 didn't have a mint mark so if you can't find one that's not an error; it's perfectly normal.
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The 1891 Morgan Silver Dollar can be seen by using the link to a picture of this coin.
Assuming the coin is circulated and has no mintmark, the 1891 Morgan dollar is a slightly better date Morgan with retail value of $38.00-$45.00 depending on the actual grade of the coin.
The date of 1891 would make it a Morgan silver dollar. Assuming the coin is circulated and does not have a mintmark, current values are from $25.00-$50.00 depending on the condition (grade) of the coin.
The date of 1891 would make it a Morgan silver dollar. Assuming the coin is circulated and does not have a mintmark, current values are from $25.00-$50.00 depending on the condition (grade) of the coin.
The 1891 Morgan is a common date coin, average retail values for circulated coins runs from $17.00-$38.00 depending on the grade of the coin. Mint state coins start at $53.00
The coin is a Morgan dollar the date 1891 is common and assuming it's circulated and has no mintmark, retail values are $17.00-$38.00 depending on the actual grade of the coin.
A 1891 U.S. silver dollar is a Morgan dollar. This series of coins were issued from 1878 through 1904 an for the last time in 1921. Assuming the coin is circulated and has no mintmark current values are $30.00-$45.00 depending on the actual grade of the coin.
The 1891 Morgan is a common date coin, average retail values for circulated coins are from $31.00-$45.00 depending on the grade of the coin.
Assuming the coin is circulated, the 1891-O Morgan dollar is a slightly better date Morgan with retail values of $32.00-$65.00 depending on the actual grade of the coin.
There's no such coin. The last Liberty Seated dollars were struck in 1873. The Morgan series started in 1878.
7-18-11>>> Assuming the coin is circulated and has no mintmark, the 1891 Morgan is a high mintage common date, retail values are $36.00-$45.00 depending on the grade of the coin.
The coin is a Morgan dollar the date 1891 is common and assuming it's circulated and has no mintmark, retail values are $17.00-$38.00 depending on the actual grade of the coin.