Since 1968 San Francisco has struck proof coins, including cents, that all carry the "S" mint mark. However they no longer make coins for circulation.
San Francisco struck pennies nearly every year from 1908 to 1955. The mint was deactivated from 1956 to 1964. In 1965 it started producing circulation coins and Special Mint Sets during the great coin shortage but none of these carried a mint mark. The S mint mark was returned to circulating cents minted from 1968 to 1974, but those were the last ones minted up to the present.
US coins minted before 1979-1981 (the exact date varies with the coin) don't necessarily have a mint mark. Coins without a mint mark were minted at the US Mint facility in Philadelphia. Since 1981, all coins except for the US cent will have a mint mark; for Philadelphia it will be a "P". US cents, often misnamed "pennies," minted in Philadelphia still do not carry a mint mark even through 2007.
If it has one, it's under the date on the front of the coin, and will be a "S" or "D" if no mintmark it was made in Philadelphia, the Mint does not use "P" mintmarks on pennies.
The US mint never made pennies like this. Plus without a date it is impossible to determine the value.
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.
For US minted coins, look for a tiny capital letter somewhere in the design. For coins minted since 1968, the mint mark is on the front of the coin. For coins dated 1964 and before, the mint mark is usually but not always on the back. D = Denver mint, S = San Francisco mint, P or no letter = Philadelphia mint, W = West Point mint (collectors' coins only). Pennies are the exception. Since 1909 the mint mark has been on the front under the date. Also, cents made in Philadelphia still don't carry mint marks even though all other denominations have used a "P" since 1980.
US coins minted before 1979-1981 (the exact date varies with the coin) don't necessarily have a mint mark. Coins without a mint mark were minted at the US Mint facility in Philadelphia. Since 1981, all coins except for the US cent will have a mint mark; for Philadelphia it will be a "P". US cents, often misnamed "pennies," minted in Philadelphia still do not carry a mint mark even through 2007.
Pennies are minted at three locations in the US; The San Francisco Mint, The Denver Mint and the Philadelphia Mint. Pennies from San Francisco have an "S" on them. Pennies from Denver have a "D" on them and pennies from Philadelphia have no letter.
In 2011, the U.S. Mint produced 4,938,540,000 pennies.
Company that makes pennies
1938 IN a MINT
If it has one, it's under the date on the front of the coin, and will be a "S" or "D" if no mintmark it was made in Philadelphia, the Mint does not use "P" mintmarks on pennies.
The US mint never made pennies like this. Plus without a date it is impossible to determine the value.
The value of any coin depends on its condition and date. The lack of a mintmark simply means it was minted in Philadelphia; US cents, often mistakenly called "pennies" after their British counterparts, have never had a Philadelphia mint mark applied to them.
The Mint Mark on a US coin is the letter that indicates which mint struck the coin. You'll find the mint mark just under the date:Philadelphia (no mint mark)Denver (D)San Francisco (S)Mint mark are present on many coins, not just wheat cents. In fact, since 1980, all US coins except cents made in Philadelphia carry mint marks. "P" designates other coins made in that city, and "W" is used on special collectors' coins made at West Point.
According to the US mint, 6015.2 million pennies were made in 2012.
US Coins with no mint mark were minted at the US Mint's main facility in Philadelphia, Pennsylvania.
Assuming that you are referring to US coins, those minted by the Philadelphia mint had no mintmark until 1980 (pennies still do not) except for nickels minted 1942 through 1945 and the 1979 Susan B. Anthony dollar coin. Note also that no US coins minted in 1965 through 1967 had mintmarks, regardless of where they were produced..