A Beginner's Guide to U.S. Mint Marks
A mint mark is a small letter showing where a U.S. coin was made: P for Philadelphia, D for Denver, S for San Francisco, O for New Orleans, CC for Carson City and W for West Point. Early gold also carries C for Charlotte or D for Dahlonega. Most Philadelphia coins before 1980 have no mark. Its spot varies by series.
What a mint mark is
When the United States opened branch mints in the 1830s, it needed a way to tell their coins apart from Philadelphia's. The answer was a small letter punched into each working die. If coins from one mint came out underweight or badly struck, the letter pointed to the source.
Today the mint mark matters most to collectors. Two coins with the same design and date can differ in value many times over because one mint made far fewer of them. Learning to find and read the mark is the first real step in sorting a coin collection.
Every U.S. mint mark and what it means
One more quirk: the Mint left mint marks off nearly all coins dated 1965 to 1967, during the switch away from silver. A 1966 quarter with no letter is normal.
| Mark | Mint | Years on coins | Good to know |
|---|---|---|---|
| None or P | Philadelphia, Pennsylvania | Since 1793 | Usually no mark before 1980. P appears on 1942 to 1945 war nickels, the 1979 dollar and most coins from 1980 on. Cents carried a P only in 2017. |
| C | Charlotte, North Carolina | 1838 to 1861 | Gold coins only |
| D | Dahlonega, Georgia | 1838 to 1861 | Gold coins only. Same letter as Denver, but the dates never overlap. |
| O | New Orleans, Louisiana | 1838 to 1861 and 1879 to 1909 | Silver and gold, including many Morgan dollars |
| S | San Francisco, California | Since 1854 | Today mostly proofs and collector coins |
| CC | Carson City, Nevada | 1870 to 1893, with a pause in the late 1880s | Silver and gold from the Nevada silver boom |
| D | Denver, Colorado | Since 1906 | A major producer of circulating coins |
| W | West Point, New York | Since 1984 | Mostly bullion, proofs and commemoratives, plus 2019 quarters released into circulation |
Where to find the mint mark on popular coins
The mark moved around over the years, and it is easy to look on the wrong side. This table covers the series sellers bring us most.
| Coin | Years | Where the mint mark sits |
|---|---|---|
| Morgan dollar | 1878 to 1904, 1921 | Reverse, below the wreath, just above the D and O of DOLLAR |
| Peace dollar | 1921 to 1935 | Reverse, lower left, below the word ONE and near the tip of the eagle's wing |
| Walking Liberty half | 1916 to 1947 | 1916 and some 1917: front, below IN GOD WE TRUST. From 1917 on: reverse, lower left near the rim |
| Mercury dime | 1916 to 1945 | Reverse, at the base of the bundle of rods, just right of the word ONE |
| Washington quarter | 1932 to 1964 | Reverse, below the wreath |
| Washington quarter | 1968 to 1998, and state quarters | Front, just right of the ribbon at the back of the hair |
| Lincoln cent | 1909 to date | Front, below the date |
| Jefferson nickel | 1938 to 1964 | Reverse, right of Monticello |
| Jefferson war nickel | 1942 to 1945 | Reverse, large letter above Monticello's dome, including P |
| Jefferson nickel | 1968 to 2004 | Front, just below the date |
| Jefferson nickel | 2006 to date | Front, below the date |
Why some mint marks bring more
A mint mark does not add value by itself. It tells you which mint made the coin, and that tells you how many were made and how many survived. When one mint struck only a small run of a given date, that coin becomes scarce, and collectors trying to finish a set will pay for it.
Well-known cases include the 1909-S VDB Lincoln cent, the 1916-D Mercury dime, the 1893-S Morgan dollar, the 1932-D and 1932-S Washington quarters and the 1950-D Jefferson nickel. In each case the same date from another mint is far easier to find.
History adds pull too. Carson City coins carry Old West appeal and came from a small mint in a mining town, so CC Morgans draw strong demand. New Orleans Morgans are common in many dates but often weakly struck, so a sharp one stands out. And the absence of a mark can matter: a few modern proofs were struck by mistake with no S, and those are prized.
- Repunched mint marks show a letter punched twice, slightly offset.
- Over mint marks show one letter punched over another, such as a D over an S.
- Both are die varieties that specialists collect.
How to read a small mint mark
- Use a 5x or 10x loupe. Hold the loupe close to your eye and bring the coin up toward it, not the other way around.
- Light the coin from the side with a desk lamp. Overhead light flattens worn letters.
- Tilt the coin slowly. A worn D, O or S often shows itself at one angle only.
- On heavily worn coins, compare the shape against a sharper coin of the same type.
- Hold the coin by its edge over a soft surface while you look.
Watch for altered mint marks
Because a single letter can change a coin's value so much, counterfeiters sometimes add a mint mark to a common Philadelphia coin or shave one off. The scarce dates above are favorite targets. Under magnification, an added letter may show a seam around its base, sit at the wrong angle or have the wrong shape for that year. Before paying a premium for any scarce date, buy it certified by PCGS or NGC or have it checked by someone who sees these every day.
Also, do not mistake a designer's initials for a mint mark. Many U.S. coins carry small initials near the bust or at the base of the design, and they have nothing to do with where the coin was made.
Want a real number?
See how we handle coin appraisals in Dallas, or call (469) 754-8608 for a free appraisal.
Checking mint marks with a Dallas buyer
Silver dollars come out of Dallas estates more than almost anything else. Parents and grandparents across North Texas picked them up at banks and saved them in cigar boxes, coffee cans and canvas bags. When those coins reach our table, the first thing we turn them over to find is the little letter under the wreath. An O for New Orleans is common in these accumulations. Every so often a CC turns up, and the heirs sit up a little straighter.
You do not have to sort anything before you call. Many sellers try with a magnifying glass at the kitchen table, get stuck on a worn Morgan from the 1880s and give up. That is fine. Bring the whole lot as it is, whether it is a single Mercury dime album or a box of rolls from a closet in Lakewood.
At a free appointment, a buyer reads every date and mint mark under magnification while you watch, then checks grade and eye appeal. If a coin is a scarce mint and date combination, we say so and explain why. If an S looks suspicious on a 1909 cent, we tell you that too. Silver and gold content is confirmed with an XRF reader on screen, and offers tie to the live spot price for metal and current dealer demand for collector coins.
Mint marks matter on more than silver dollars. We also find better-date Mercury dimes, Walking Liberty halves and Jefferson war nickels in Dallas coin jars and old desk drawers. The war nickels are easy to spot once you know the trick: a large P, D or S above Monticello's dome means the coin holds 35% silver, which makes it worth more than five cents before grade even enters the picture.
You leave with a written offer item by item, and there is no obligation to sell. Call (469) 754-8608, Monday to Friday, 9am to 5pm, to book a time.