Assuming the coin is circulated, the 1881-O Morgan is a common New Orleans Mint coin. Most coins have seen heavy use and show a lot of wear. Retail values are $37.00-$41.00
$75 to $100 retail, depending on condition
I don't believe there is a 1876 Morgan silver dollar. I believe in 1876 it was a For the silver content: ~$9 (12/30/08) Depending on condition: $500-$3000
Your 1896 Morgan dollar is worth about $10.00 to $30.00 in circulated condition.
A 1901-S Silver Dollar - aka - Morgan Dollar - is worth in a mint state of AU50: $225.00.
Not a Morgan dollar, last year was 1921. You have a 1923 Peace dollar that is very common and has values of $25.00-$27.00 in circulated condition.
It is not very easy to find out the value of a 1878 morgan silver dollar, because the value varies from $20 to $46000 which depends on the condition of the coin. A specialist could help to find the value of this coin.
A 1901 silver or dollar is also known as a Morgan Silver Dollar. It is ninety percent silver and usually worth at least forty dollars even in poor condition.
$15 to $20 depending on condition and variety.
$15.00 to $20.00 in circulated condition.
The coin is a 1878 Morgan silver dollar and is common with values of $17.00-$31.00 in average circulated condition
Currently a 1880 S Morgan silver dollar in MS65 uncirculated condition is worth $156.
It depends, this silver dollar, which since you say has a "D" on it, which means it is a Morgan Dollar, is not worth much over its bullion value in this condition. As the price of silver has risen (about $35 per ounce as I write this), the silver value has now exceeded its numismatic value. Keep in mind that a silver dollar is NOT one ounce of silver. The coin is 90% silver and has 0.77343 of silver in them