On an original Peace dollar dated 1921–1935, look for the mint mark on the reverse—the eagle side—just below the word ONE. A D means Denver, an S means San Francisco, and no mint mark indicates Philadelphia.
That little spot is easy to miss. But once you know where to look, identifying the mint becomes a lot less confusing.
I like to start here because it gives you something useful you can do immediately. Pick up a Peace dollar, turn it over, and find that area. You don’t need to know its grade or what it’s worth yet. First, let’s figure out exactly which coin you have.
This guide focuses on the original series. Modern Peace dollars beginning in 2021 are separate collector issues, so check the date before applying these instructions.
Where is the mint mark on a Peace dollar?
Turn the coin so the eagle is upright. Find the word ONE on the left side of the reverse. The small mint mark, when present, sits below that word, near the eagle’s tail.
Start with your eyes, then use a small magnifier if you need one. Good lighting usually helps more than trying to zoom an already blurry photograph.
Here’s the order I suggest:
· Read the date on the front.
· Turn the coin to the eagle side.
· Find ONE.
· Look directly below it for a small D or S.
· Write down the date and mint mark together.
If you cannot make out a letter, don’t force an answer. A worn surface, dark toning, or a poor photograph can make that area difficult to read. Take another look under different lighting before recording the coin as having no mint mark.
And please don’t rub or scrape the area to make a letter show up. You can damage the coin while trying to identify it.
What do D, S, and no mint mark mean?
For original Peace dollars, you have three mint possibilities:
· D: Denver.
· S: San Francisco.
· No mint mark: Philadelphia.
You will sometimes see a seller write “1923-P” to identify a Philadelphia coin. That P is shorthand in the description. It is not a letter you should expect to find on an original 1923 Peace dollar.
The same idea applies when an album or checklist uses a P beside the date. The label identifies the mint; it doesn’t mean the coin itself carries that letter.
If you’re still getting comfortable with mint marks across different coin types, my guide to what mint marks mean and where to find them explains the broader picture.
Is a Peace dollar with no mint mark rare?
No mint mark does not automatically mean rare. It tells you the coin came from Philadelphia. You still need the date and condition before drawing conclusions about value.
The Philadelphia issues of 1922 and 1923 are familiar examples that collectors regularly encounter. A 1928 Philadelphia Peace dollar is a different situation: it is a key issue with a mintage of 360,649.
That is why I don’t like shortcuts such as “no mint mark means valuable.” The shortcut leaves out the very information that matters.
Think of the mint mark as part of the coin’s name. “1928 Peace dollar” gets you started. “1928 Peace dollar, Philadelphia, no mint mark” is much more specific.
That specificity matters when you search for sold coins, compare a price guide, or ask someone for help identifying an inherited coin.
Why must you check the date and mint mark together?
Different mints produced different quantities, and surviving coins are not equally available in every condition. The letter by itself cannot tell you which coin is scarce.
For example, a 1928-S and a 1928 Philadelphia Peace dollar are separate issues. You should not use the price of one as the price of the other simply because the dates match.
The same caution applies when someone describes every S-mint coin as rare. San Francisco production is interesting, but an S is not a promise of a high value.
I would rather see you pause and identify the exact coin than get excited about a price attached to a different one.
When researching, type the complete identification into your search. Include the date, Peace dollar, and the mint mark if there is one. Then compare coins with similar wear and surface condition.
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What if you find a letter somewhere else?
A letter or marking elsewhere on the coin is not automatically a mint mark. The location matters.
The front of a Peace dollar includes the designer’s monogram near the base of Liberty’s neck. That identifies Anthony de Francisci, the designer. It does not identify a mint.
You may also notice that TRUST looks like TRVST. That is part of the design’s lettering, not a mint mark and not, by itself, an error.
I mention these details because it’s easy to get sidetracked when you’re examining a coin for the first time. Go back to the same reference point: eagle side, below ONE.
If the coin has a modern date, stop and identify that issue separately. Don’t compare a modern collector coin with a classic circulating issue just because both show the Peace dollar design.
Can a Peace dollar mint mark be altered?
Yes. A mint mark can be removed or otherwise altered to make a coin appear to be a more valuable issue. Dates can also be changed.
The 1928 Philadelphia Peace dollar deserves particular care. Documented alterations include changing the date on a 1923 coin or removing the S from a 1928-S.
That does not mean every 1928 you see is suspicious. It means a valuable identification needs more support than a seller’s headline.
I would slow down if the mint-mark area looks scraped, oddly smooth, or different from the surrounding surface. But those are reasons to seek a knowledgeable opinion, not enough evidence to authenticate or condemn a coin on your own.
For a purchase where the scarce date is driving the price, consider a coin authenticated by an established grading service, bought from a seller you trust. Check the certification record and compare the available images with the actual coin and holder. A number that appears in a database does not, by itself, settle every question.
How should you record a Peace dollar?
Keep your notes simple enough that you will actually use them.
For each coin, record:
· Date and mint, such as “1923, Philadelphia, no mint mark.”
· Whether it is raw or in a grading-service holder.
· The assigned grade, if professionally graded, or a cautious description of wear.
· Any disclosed cleaning, damage, or other concerns.
· Where you obtained it and what you paid.
Take a photograph of both sides while you have the coin in front of you. A clear reverse photograph will save you from trying to remember whether a tiny mark was a D, an S, or a shadow.
For an inherited coin, “condition not yet assessed” is a perfectly reasonable note. You don’t have to guess a grade just to start organizing.
Why doesn’t the mint mark tell you the value?
Because identifying a coin and evaluating it are two different steps.
Once you know the date and mint, look at condition, surface problems, and what comparable coins have actually sold for. A cleaned or damaged example is not directly comparable to a problem-free coin carrying the same date.
If you want help understanding that next step, read how condition, rarity, and demand affect coin values.
My advice is to learn the identification first. Then learn how to evaluate what you have. That sequence keeps a lot of confusing information from landing on you all at once.
Common questions about Peace dollar mint marks
Does a 1921 Peace dollar have a mint mark?
Original 1921 Peace dollars were struck at Philadelphia and have no mint mark. They are also known for their high-relief design. Don’t confuse them with Morgan dollars carrying the same year.
Does an S mean the coin is a proof?
No. On an original Peace dollar, S identifies San Francisco. It does not automatically mean proof. The mint location and the method used to make a coin are separate things.
Were Peace dollars made at Carson City?
No original Peace dollars were struck at Carson City. CC is a mint mark you may encounter on Morgan dollars, not an original Peace dollar mint mark.
What if I cannot see a mint mark in the seller’s photo?
Ask for a clear close-up of the area below ONE. If that detail affects the identification or price, settle it before buying. There is no benefit in guessing when a better photograph could answer the question.
Keep learning at your own pace
Once you know where the mint mark belongs, the reverse stops looking like a collection of tiny details. You have a place to start and a way to record what you find.
For a fuller guide, my book Peace Dollars for Beginners covers dates, mint marks, basic grading, and building your first collection. It is part of the Numisteria Beginner Series and is written to help you take the next step without feeling you have to learn everything in one sitting.
Explore Peace Dollars for Beginners on Amazon.
You can also browse the Numisteria coin collecting guides for help with buying, grading, and protecting your coins.
And if you would like to keep learning with me, join Coins Clearly for practical coin tips each month.
August Keene is the founder of Numisteria, a coin collecting website built for beginners. His mission is to help new collectors avoid costly mistakes, understand what their coins are worth, and enjoy the hobby with confidence.
