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The 1928-S Mercury Dime is worth anywhere from $3 in worn condition to over $900 in high-grade mint state. Finding one of these silver beauties in your pocket change or an old jar is an exciting discovery, as it remains a favorite among silver stackers and numismatic enthusiasts alike.
| Condition | Estimated Value |
|---|---|
| Good (G-4) | $3.50 – $4.50 |
| Fine (F-12) | $6.00 – $8.00 |
| Extremely Fine (XF-40) | $15.00 – $22.00 |
| Uncirculated (MS-60) | $65.00 – $85.00 |
| Choice Mint State (MS-65+) | $250.00+ |
Understanding the 1928-S Mercury Dime Rarity
When looking at the history of the Winged Liberty Head dime, the 1928 San Francisco minting holds a special place. With a total mintage of 6,730,000, it is not the rarest date in the series, but it is considered a “better date” compared to the common Philadelphia issues of the same era.
If you are unsure whether your coin is a genuine treasure, using a top coin identifier app can help you confirm the mint mark and basic condition within seconds. Most 1928-S dimes were heavily circulated during the era leading up to the Great Depression, which means finding one in pristine, untouched condition is quite difficult for modern collectors.
The “S” mint mark is located on the reverse side of the coin, near the bottom left, just above the “E” in “ONE.” If your coin lacks this mark, it was minted in Philadelphia. For those using CoinKnow, you can simply take a photo of the reverse to instantly verify the San Francisco origin.
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Grading and 1928 San Francisco Silver Dime Prices
The value of your 1928 silver dime is primarily dictated by its “grade,” which is a professional assessment of its wear and tear. A coin that has been passed around in pockets for decades will only be worth its silver melt value plus a small premium. However, a coin that was tucked away in a piggy bank and still retains its original luster can be worth hundreds.
When evaluating your collection, you should check the high-resolution 1928-S Mercury Dime price trends to see how much “Full Band” versions are currently selling for. “Full Bands” (FB) refers to the horizontal lines on the bundle of sticks (fasces) on the back of the coin. If those lines are crisp and distinct, the value triples.
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| Grade Designation | Standard Strike Value | Full Band (FB) Value |
|---|---|---|
| About Uncirculated (AU-50) | $35 | N/A |
| Mint State 63 (MS-63) | $95 | $210 |
| Mint State 65 (MS-65) | $240 | $850 |
| Mint State 67 (MS-67) | $900 | $7,500+ |
The Full Band (FB) Detail Explained
For the 1928-S Mercury Dime, the strike quality at the San Francisco mint was often “mushy.” This means that even coins that were never spent may have flat details on the reverse. Because of this, collectors pay an enormous premium for coins that feature “Full Bands.”
This term refers to the central horizontal bands holding the fasces together. If you can clearly see the split between the upper and lower bands, you have a rare specimen. Many people use CoinKnow to zoom in on these specific details, as the app provides high-definition comparisons of what “Full Bands” should look like.
Your Old Coin Could Be Valuable!
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Without the FB designation, even a very shiny 1928-S dime might only fetch a fraction of the price of a certified Full Band coin. This is why professional grading by services like PCGS or NGC is highly recommended for high-quality coins.
Factors That Influence 1928-S Silver Dime Worth
Aside from the technical grade, several other factors can change the current 1928-S dime market value. The primary driver is eye appeal. A coin with beautiful “toning”—the natural oxidation that produces rainbow-like colors—can sell for significantly more than a plain white or grey coin.
Conversely, damage can ruin a coin’s value. If someone “cleaned” the dime with a cloth or metal polish, it may look shiny, but professional collectors will see the microscopic scratches. A cleaned coin usually loses 50-70% of its numismatic value.
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Market demand is also a factor. The Mercury Dime series is one of the most popular in the world. Thousands of collectors are currently trying to complete “date and mint” sets. Because the 1928-S is more difficult to find than the 1928-P, the demand for this specific year remains consistently high.
Common Errors Found on 1928-S Dimes
While die varieties are not as famous for the 1928-S as they are for the 1942/41 overdate, there are still interesting errors to look for. One common issue is “die cracks,” which look like raised jagged lines across the surface of the coin.
There are also “re-punched mint marks” (RPM), where the letter “S” was struck twice, creating a shadowed effect. While these don’t always turn a $5 coin into a $5,000 coin, they do add a significant premium for error collectors. Using a tool like CoinKnow can help you identify these subtle variations that the naked eye might miss.
| Error Type | Typical Value Addition |
|---|---|
| Minor Die Crack | $5 – $15 extra |
| Lamination Error | $10 – $50 extra |
| Off-Center Strike (10%+) | $100 – $300+ |
How to Store Your 1928-S Mercury Dime
If you discover that your 1928-S dime is in high-grade condition, you must protect it immediately. Exposure to air, moisture, and the oils on your skin can degrade the silver surface. A simple PVC-free coin flip or a plastic capsule is the best way to preserve its value.
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Never store your coins in “sticky” photo albums or envelopes containing sulfur, as these will cause ugly black spots that cannot be removed without damaging the coin. Keeping your collection in a cool, dry place ensures that if you decide to sell your 1928-S dime in ten years, it will have maintained its luster and its price point.
Summary of the 1928-S Dime Value
The 1928-S Mercury Dime is a tangible piece of American history from the Roaring Twenties. Whether it’s worth $4 or $4,000 depends entirely on its state of preservation and the presence of the Full Band detail. Always take the time to inspect the “S” mint mark and look for signs of original mint luster.
If you are a beginner, start by separating your silver dimes from your modern ones. Any dime dated 1964 or earlier is 90% silver, but dates like the 1928-S are the ones that truly reward the observant collector.
FAQ
Q: Why is my 1928-S dime worth more than the Philadelphia version?
A: The San Francisco mint generally produced fewer coins than Philadelphia in 1928. Lower supply combined with high collector demand for mint marks makes the “S” variant more valuable in almost every grade.
Your Old Coin Could Be Valuable!
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Q: Is every 1928 dime made of silver?
A: Yes, all Mercury Dimes minted between 1916 and 1945 are composed of 90% silver and 10% copper. Even in poor condition, they are worth at least their weight in silver.
Q: How can I tell if my 1928-S dime has been cleaned?
A: Look for fine, parallel scratches on the surface or an “unnatural” shine that looks more like a mirror than a soft glow. Also, check for dark dirt specifically trapped inside the letters while the rest of the coin is bright.
Q: What is the highest price ever paid for a 1928-S Mercury Dime?
A: Exceptional specimens in MS67 condition with Full Bands have sold at auction for over $15,000. These are extremely rare and usually certified by professional grading companies.