Not enough information. Please post a new question with the coin's denomination.
On an 1879 Silver Dollar, the mint mark is located on the reverse side, just below the eagle's tail feathers. Depending on the mint where it was produced, the mint mark will be either an "S" for San Francisco, "CC" for Carson City, or no mint mark for the Philadelphia mint. This small letter indicates the location where the coin was minted.
The 1879 Morgan dollar with no mint mark is common. A circulated coin is worth $32.00-$39.00. Average Mint State coins are $42.00 to $55.00
The 1879 Morgan dollar with no mint mark is common. A circulated coin is worth $32.00-$39.00. Average Mint State coins are $42.00 to $55.00
Current retail values are $17.00-$26.00 for circulated coins 1879 is a common date for Morgans
1879 would make it a Morgan dollar, so the mint mark is located on the reverse (tails) side, near the bottom, just above the letters "do" in the word "dollar." No mint mark means it's from Philadelphia, S is for San Francisco, O is New Orleans, and CC is Carson City.
Normally you have to know a coin's denomination to locate the mint mark because it can be in different places. Also, Philadelphia did not use a mint mark on most coins until 1980 so it's very possible your coin doesn't have a mint mark. Once you know the denomination you can check a site such as www.coinfacts.com that shows the mint mark locations for all US coins.
The mint mark is a letter, not a number. It might be an S or a O or a CC, or there might be no mint mark. A CC is a very valuable one $500-1500. Yours is probably an average coin, about $25-35.
If the coin has a mintmark, it's on the reverse above the letters DO in dollar.
If there is one it's on the back above the letters DO in the word dollar
Look on the back of the coin to see if there's a small mint mark letter below the eagle. It may be blank or there may be a CC, O or S.Numismedia lists the following approximate retail values as of 07/2010:No mint mark (Philadelphia):Moderately worn - $1,510Slightly worn - $1,570Almost no wear - $1,698Uncirculated - $2,130 to $18,230 depending on quality"CC" mint mark (Carson City):Very worn - $1,560Moderately worn - $1,970Slightly worn - $2,410Almost no wear - $14,812Uncirculated - $35,750 to $53,950"O" mint mark (New Orleans):Very worn - $5,600Moderately worn - $13,130Slightly worn - $23,130Almost no wear - $56,684Uncirculated - $102,050 to $182,250"S" mint mark (San Francisco):Very worn - $1,490Moderately worn - $1,510Slightly worn - $1,570Almost no wear - $1,670Uncirculated - $2,030 to $43,880August 13, 2009 The 1879 Double Eagle [$20] coin was minted at 4 US Mint facilities: Philadelphia which is shown as 1879-P in this list, Carson City which is shown as 1879-CC in this list, New Orleans which is shown as 1879-O in this list and San Francisco which is shown as 1879-S in this list. To determine which coin you have it will be necessary to locate the mint mark. This mark is a small letter and is located on the reverse side of the coin just below the eagle. The letters "CC" are for Carson City. The letter "O" is for New Orleans. The letter "S" is for San Francisco. If there is no letter the coin was minted at Philadelphia. The values for these coin in "AU" condition are shown in the following list: Circulated Grade..........1879-P.............1879-CC............1879-O............1879-S AU55.............................$1,750.............$20,000...........$62,500............$1,900
Not strictly, because that's really 2 different questions in one. The New Orleans Mint used an O mint mark from 1838 to 1861 and 1879 to 1909, and the first coins to carry a P mint mark were "war nickels" minted from 1942 to 1945, so the O mint mark definitely precedes the P mint mark. Because the Philadelphia Mint had been striking coins without using a P mint mark beginning in 1793, coins from that city can easily predate coins from New Orleans.
It's a fake Trade Dollar, 1879 Trade Dollars are proof only issues that were struck in Philadelphia and have no mint mark