If you have a Liberty Seated Dime, the "CC" mint mark will be on the reverse [tails] side of the coin at the bottom and can be either inside the wreath or just below it. If you have a Liberty Seated Quarter the "CC" mint mark will be on the reverse [tails] side of the coin at the bottom below the eagle. If you have a Liberty Seated Half Dollar the "CC" mint mark will be on the reverse [tails] side of the coin at the bottom below the eagle. If you have a Lbert Seated Silver Dollar the "CC" mint mark will be on the reverse [tails] side of the coin at the bottom below the eagle. If you have a Silver Trade Dollar the "CC" mint mark will be on the reverse [tails] side of the coin a the bottom just above the "D" in "DOLLAR" If you have a Morgan Silver Dollar the "CC" mint mark will be on the reverse [tails] side of the coin at the bottom below the wreath.
$18 to $6500 depending upon the mint mark and the condition of the coin.
Please see the attached link.More:The value depends on where the coin was minted and what condition it is in. The 1871 Seated Liberty Silver Dollar was minted in Philadelphia and Carson City. According to USA Coin Book, these are the values of this coin: Philadelphia (no mint mark): A coin in good condition is worth about $215 up to about $1,700 in MS60 mint condition. In MS63 choice uncirculated grade, this coin is worth about $4,000. Proof coins were also minted in Philadelphia and these are worth roughly $3,750.Carson City (small "CC" mint mark): A coin in good condition is worth about $1,900 up to about $72,250 in MS60 mint condition. Not many coins are known to exist beyond this good of condition but they would be most certainly be worth much more.
The mint mark is on the reverse (tails) side, just below the eagle and above the the words ONE DOL. If there is no mint mark, it means the coin was minted in Philadelphia.
Several coins used the Seated Liberty design. Please post a new question with the coin's denomination, and the mint mark if you can locate it. Many of the coins don't have mint marks because they were made at the main mint in Philadelphia. Others will have a small S, O, or CC on the back under the eagle.
$20-$1,300
If you have any US coin dated 1845 with a Carson City mint mark it's a counterfeit coin. The Carson City Mint was built in 1869 and first year of operation is 1870
The mint mark will be the letter "S". for San Francisco, and is located beneath the bow on the wreath along the bottom edge of the design. If there is no "S" there, the coin was minted at the Philadelphia mint.
There's no "R" mint mark. The mint mark position on a Seated Liberty half should be below the eagle. If the "R" is elsewhere your coin has been altered and has lost most of its collector value. If the R is where the mint mark should be please check it with a good magnifying glass. There's more information at the Related Question.
Seated Liberty halves were issued from 1839 to 1891 at four different mints so it's not possible to answer such a broad question. Please post a new and more specific question that includes the coin's date and whether it has a small mint mark letter (O, S, CC) on the back under the eagle.
If it has a mintmark it's on the reverse below the wreath.
There is no such coin. Morgan dollars* were not issued until 1878. If you have a Liberty Seated dollar with that date, its value depends on its condition and mint mark: No mint mark - $400 if very worn, $1000 if moderately worn, $1600 if like new "O" mint mark - $250, $750, $1200 If you have a Morgan dollar with the date 1850 it is a counterfeit. (*) The coin is called a Morgan dollar after its designer. It carries the image of Miss Liberty, not the head of Mr. Morgan.