The 1881-O Morgan is a common coin, circulated coins have retail values of $17.00-$26.00 depending on grade. Mint State coins in the grade range of MS-60 to MS-63 have retail value of $30.00-$53.00
1922 silver dollar with closed eagle wings
About $107.50.
They didn't mint 1920 US silver dollars.
The coin is a Eisenhower dollar and has no silver in it. Only proof and uncirculated coins from the mint have more than face value.
About $150.
42cents
About $27.
About $17.00.
A 1924 Silver Dollar would include the Peace Dollar. If its mint state is very good (VG-8), the value is: $20. Should the mint state be MS-60, the value increases to: $35. A 1924 silver dollar is a Peace dollar, values for circulated coins are $17.00-$26.00. The term "Mint State" is used only for uncirculated coins.
"DO" isn't a mint mark. The mint mark on a silver dollar for that year is on the reverse (tails) side, just above the letters "do" in the word "dollar."
Don't know what you have, but it's not a U.S. Mint dollar.
The most common Mint State grade for an 1889 Morgan dollar is MS-63 and retail value is $53.00