The 1879 $10 gold piece was minted at 4 different mints. The mintmark is a small letter located on the reverse [tails] side of the coin just under the eagle. There should be a "D", a "CC", an "O" or none at all. If there is no mintmark at all then that means the coin was minted at Philadelphia. Locate the mintmark and then resubmit your question and an approximate value can be determined.
Assuming the coin is circulated and has no mintmarks. The 1879 Liberty Head eagle is a common date $10 gold piece. Values are $820.00-$960.00 depending on the grade of the coin.
It's often called a Morgan dollar, after its designer George Morgan.Please see the Related Question for more information.
On August 25,2017 the value of an 1879-s with the 1878 reverse ranges from about $36 to $43000 depending upon the condition of the coin.
This link shows a 1879 Morgan Dollar: http://www.coinfacts.com/silver_dollars/morgan_dollars/1879_morgan_dollars/1879_morgan_dollar_obv.jpg
$558.00
$275.00 to $300.00 in circulated condition
Assuming the coin is circulated and has no mintmarks. The 1879 Liberty Head eagle is a common date $10 gold piece. Values are $820.00-$960.00 depending on the grade of the coin.
It's often called a Morgan dollar, after its designer George Morgan.Please see the Related Question for more information.
On August 25,2017 the value of an 1879-s with the 1878 reverse ranges from about $36 to $43000 depending upon the condition of the coin.
The Morgan Dollar depicts a personification of Liberty and not a living person.
This link shows a 1879 Morgan Dollar: http://www.coinfacts.com/silver_dollars/morgan_dollars/1879_morgan_dollars/1879_morgan_dollar_obv.jpg
$558.00
About $30.
$558.00
It's called a Morgan dollar not a Liberty dollar and is very common with values of circulated coins at $17.00-$26.00 Mint state coins sell at $30.00-$50.00
An 1879 "Silver Dollar" is a Morgan dollar.
The last standard silver dollars with a Seated Liberty design were made in 1873. Trade dollars with a similar design were minted up till 1885 but from 1879 onward they were only struck as proofs. They also had the words TRADE DOLLAR on the back.Please check your coin again. If it's a Morgan dollar with Miss Liberty's head, there's more information at the Related Question. If it's a trade dollar you'll need to have it checked in person by an expert dealer or appraiser. If it's anything else it's either a fantasy piece or a counterfeit.