The letters are called Mintmark's NOT mint stamps. They are used to identify which mint the coin was made at.
The "S" is a mint mark not a stamp, but the value is $2.00-$3.00 for circulated coins and a mint state coin is $7.00
The mint mark is located in different places depending upon the coin and the date it was minted.
No such thing as a 'mint stamp' in dealing with coins. They are called "Mintmarks" for Morgans, all are on the reverse of the coins. The easy thing to do to see one is, in your search box type in Morgan dollar mintmarks and click on images.
Mint MARK rather than "stamp", and it's the same on all circulating US cents:No mint mark = PhiladelphiaD = DenverS = San Francisco (only on older circulation coins, and on proofs made since 1968)
It is referred to as postally used. Some collectors prefer used versions to mint ones.
The term is actually mint mark rather than mint "stamp". There are four US mintmarks that are currently in use and a four additional historical ones. They are an "S" for the San Fransisco Mint, "D" for the Denver Mint, "W" for the West Point mint, "P" (and on pennies and older coins, no mintmark) for the Philadelphia Mint. And historically there was a "CC" for the Carson City Mint, an "O" for the New Orleans Mint and on some older gold coinage (1838-1861) a "D" refers to Dahlonega Mint, keep in mind that the Denver Mint is much newer and the mintmarks were never used simultaneously.
A used stamp is seldom worth more than a mint stamp. However, that can vary considerably. The stamps of some countries, such as Tonga, are worth more used then mint. And a used stamp on an envelope could be worth a great deal depending on the cancellation and other factors.
All coins come from a mint. Casino coins are sometimes solid silver.
The mint mark "S" on US coins means the coin was minted in San Francisco, California. For more information concerning mint marks visit the site at the related link, below. Coins produced at the Denver mint have a "D" and those at the Philadelphia mint have either no mint mark (for pennies and coins before 1980) or a "P" for all other denominations. Coins produced at the mint at West Point, NY (largely bullion coins, although some 1996 dimes were produced there) have a "W" mint mark.
Coins (along with some medals) are made at mints.
The US Mint produces circulating coins, commemorative coins, and bullion coins for the United States.
To set things straight, it's called a mint mark. In general, mint marks were on the reverse side of older gold coins but not always. Also, coins struck at Philadelphia did not carry any mint mark in those days, so a coin without a mint mark is perfectly OK.I'd suggest looking at the site www.coinfacts.com. They have every date and mint mark listed, along with a description (and often a picture, too) of the mint mark location.