Coins do not have serial numbers. If you're referring to a bill, the serial number is hardly ever important to its value, but the date and denomination are. Please post a new question with that information.
For the series of Morgan dollars 1921 is the highest mintage year. Assuming the coin is circulated and depending on grade and mintmark, retail values are $16.00-$25.00
Assuming the coin is circulated, the 1888 Morgan dollar is a common, value is $32.00-$38.00 depending on grade.
4-20-11>> Assuming the coin is circulated and has no mintmark, the 1922 Peace dollar is the most common of them all in any grade. A circulated coin is only $37.00 to $41.00 retail.
The grade of a circulated coin is based oc how much wear it has.
Assuming the coin is circulated and has no mintmark, the 1894 Morgan dollar is a higher value low mintage coin. For an accurate assessment of value the coin needs to be seen and graded. Most coins show a lot of wear. In general retail values for low grade coins are $830.00-$1,230.00, better grade are $1,320.00-$1,440.00 and coins showing almost no wear run from $1,780.00-$2,630.00. Values are a market average and only for coins in collectible condition, coins that are bent, corroded, scratched or have been cleaned have far less value if any to a collector or dealer.
Assuming the coin is circulated and has no mintmark, the 1900 Morgan dollar dollar is a common date of the series. Retail values are $30.00-$39.00 depending on the grade of the coin.
Assuming the coin is circulated and has no mintmark, the 1902 Morgan dollar dollar is a common date of the series. Retail values are $32.00-$45.00 depending on the grade of the coin.
The 1925 Peace dollar is a common date of the series. Circulated examples with no mintmarks have current market values of $30.00- $37.00 depending on the actual grade of the coin.
The 1925 Peace dollar is a common date of the series. Circulated examples with no mintmarks have current market values of $30.00- $37.00 depending on the actual grade of the coin.
The 1923 Peace dollar is a common date of the series. Circulated examples with no mintmarks have current market values of $30.00- $37.00 depending on the actual grade of the coin
The 1884 Morgan dollar is a common date of the series. Circulated examples with no mintmarks have current market values of $32.00- $39.00 depending on the actual grade of the coin.
The 1925 Peace dollar is a common date of the series. Circulated examples with no mintmarks have current market values of $30.00- $37.00 depending on the actual grade of the coin
The 1925 Peace dollar is a common date of the series. Circulated examples with no mintmarks have current market values of $30.00- $37.00 depending on the actual grade of the coin.
The 1900 Morgan dollar is a common date of the series. Circulated examples with no mintmarks have current market values of $32.00- $39.00 depending on the actual grade of the coin
The 1889 Morgan dollar is a slightly better date of the series. Circulated examples with no mintmarks have current market values of $32.00- $45.00 depending on the actual grade of the coin
For the series of Morgan dollars 1921 is the highest mintage year. Assuming the coin is circulated and depending on grade and mintmark, retail values are $16.00-$25.00
Assuming the coin is circulated and has no mintmark, the 1922 Peace dollar is the most common of them all in any grade. A circulated coin is only $30.00 to $37.00 retail.