Many factors affect the value. Most important are condition and what mint made it. Depending on these factors value can range from $40-$1250. Although there are more expensive proof varieties in existence it is reasonable to conclude yours is not one of them.
The 1879-S Morgan is very common, retail for circulated coins runs from $17.00-$26.00 Mint State examples are about $35.00
The 1879 Trade Dollar is a Proof only issue coin and many are counterfeited. A genuine example is valued well over $2,000.00
6-23-11>>> Assuming the coin is circulated and has no mintmark, the 1879 Morgan dollar is a very common coin with retail values of $36.00-$41.00 depending on the grade of the coin.
$558.00
Only 1,541 trade dollars were struck in 1879 and all were proof coins. You'd need to have the coin inspected in person by an expert, but trade dollars are among the most widely counterfeited dollar-sized coins.
Retail for circulated coins is $17.00-$26.00 depending on the grade.
About $30.
$558.00
The 1879-S Morgan is very common, retail for circulated coins runs from $17.00-$26.00 Mint State examples are about $35.00
The 1879 Trade Dollar is a Proof only issue coin and many are counterfeited. A genuine example is valued well over $2,000.00
6-23-11>>> Assuming the coin is circulated and has no mintmark, the 1879 Morgan dollar is a very common coin with retail values of $36.00-$41.00 depending on the grade of the coin.
$558.00
Only 1,541 trade dollars were struck in 1879 and all were proof coins. You'd need to have the coin inspected in person by an expert, but trade dollars are among the most widely counterfeited dollar-sized coins.
An 1879 "Silver Dollar" is a Morgan dollar.
It's a Trade Dollar not a Morgan dollar. If you look at the back of the coin, the phrase "Trade Dollar" is under the eagle. As to value, take it to a coin dealer for an assessment it may not be genuine. The entire series is known to have had copy's and fakes made.
An 1879 S Morgan dollar in MS(Mint State)63 condition is worth somewhere around $64. This is a common date.
Please check your bill again and post a new, separate question. There were no federally-issued silver certificates dated 1879, just $1 silver coins.