Rare Error Dimes: Finding valuable coins in everyday change is every collector’s dream. But what if a tiny minting mistake could make a dime worth hundreds of thousands of dollars? That’s exactly what happened with two rare error dimes that recently sold for a combined $850,000. These dimes, despite their small size, hold incredible value due to unique minting errors that make them stand out in the world of numismatics.
In this article, we’ll explore what makes these rare error dimes so valuable, the specific features that set them apart, and how you can identify similar coins that might be worth a fortune. If you’re a coin enthusiast or just curious about valuable collectibles, keep reading to learn what to look for in your own collection!
Overview: The Two Record-Breaking Rare Error Dimes
Here’s a quick look at the two rare error dimes that fetched an astonishing price:
| Coin | Key Features | Sale Price | Why It’s Valuable |
| 1968-S No-S Proof Dime | A proof coin missing the “S” mintmark | Over $400,000 | Extremely rare proof error, very few exist |
| 1975 No-S Proof Dime | Another proof dime missing the “S” mintmark | $450,000 | Only two known to exist, making it one of the rarest dimes |
Both of these error dimes are proof coins, which means they were specifically made for collectors with polished surfaces and sharper details. The fact that they were struck without the “S” mintmark, which identifies proof coins from the San Francisco Mint, makes them incredibly rare.
Why Are Rare Error Dimes So Valuable?
1. Minting Mistakes Create Scarcity
Coins are mass-produced with strict guidelines, and proof coins undergo even more rigorous quality control. When a minting mistake occurs, especially on a proof coin, the resulting error is extremely rare.
The 1968-S No-S Proof Dime and the 1975 No-S Proof Dime were mistakenly struck without the “S” mintmark, making them unique collectibles. Since so few exist, demand among collectors drives their prices sky-high.
2. Historical Significance and Collector Appeal
Error coins are more than just valuable—they tell a fascinating story about the minting process and its occasional slip-ups. Collectors love them not just for their rarity but also for the mystery behind their creation.
3. High Demand Among Numismatists
The rarer the coin, the more collectors are willing to pay for it. In the case of the 1975 No-S Proof Dime, only two examples are known to exist, making it one of the most sought-after dimes in U.S. history.
Spotlight on the 1968-S No-S Proof Dime
The 1968-S No-S Proof Dime is a perfect example of how a small minting error can turn an ordinary coin into a numismatic treasure.
- This dime was part of a proof set that should have included an “S” mintmark below the year, indicating it was made at the San Francisco Mint.
- A small batch of these dimes was mistakenly struck without the “S”, making them incredibly rare.
- One of these error dimes recently sold for over $400,000 at auction.
If you ever come across a proof dime missing the “S” mintmark, it could be worth a significant amount of money.
The Incredibly Rare 1975 No-S Proof Dime
The 1975 No-S Proof Dime is even rarer than the 1968 version.
- This coin was part of a special proof set, but a small number were struck without the “S” mintmark.
- Only two examples are known to exist, making it one of the rarest U.S. dimes ever minted.
- In a recent auction, one of these dimes sold for $450,000, making it a record-breaking sale.
Because of its extreme rarity, if another one is discovered, it could easily fetch an even higher price at auction.
How to Identify Rare Error Dimes
If you want to check your coin collection for valuable rare error dimes, follow these steps:
✅ Look for Missing Mintmarks
- Proof dimes from the San Francisco Mint should have an “S” mintmark below the year.
- If the “S” is missing on a proof dime, it could be an extremely valuable error.
✅ Examine the Coin’s Condition
- Coins in mint condition (without scratches or wear) are significantly more valuable.
- Proof coins should have a mirror-like surface and sharp details.
✅ Check for Other Unique Features
- Some error dimes also have overdates, doubled dies, or off-center strikes, which can add to their value.
✅ Get a Professional Grading
- If you suspect you have a rare error dime, send it to a grading service like PCGS or NGC.
- Graded coins fetch higher prices and are easier to sell.
Other Valuable Error Coins to Watch For
While these two rare error dimes made headlines, other error coins are also worth big money:
💰 1942/41 Mercury Dime – Features an overdate where 1941 was stamped over with 1942.
💰 1955 Doubled Die Lincoln Penny – Shows doubled lettering, making it one of the most famous penny errors.
💰 1970-S Small Date Lincoln Penny – A small variation in the date makes this penny a collector’s favorite.
These coins prove that small mistakes can lead to big money in the world of coin collecting!
Where to Find Rare Error Dimes
Think you might have a valuable coin? Here’s where to look:
🔎 Check Your Old Coin Collections – Many valuable coins come from inherited collections or forgotten coin jars.
💰 Inspect Proof Sets – Error dimes like the No-S Proof Dimes were found in proof sets, so check those carefully.
🛒 Attend Coin Auctions – Some of the best places to find rare error coins are through trusted coin auctions.
📢 Join Collector Groups – Online forums and collector clubs can help you stay updated on rare coin discoveries.
FAQs About Rare Error Dimes
What makes a coin an error coin?
An error coin is a coin that was struck incorrectly during minting. This can include missing mintmarks, doubled designs, or overdates.
How can I tell if my dime is a rare error dime?
Check below the year—if your proof dime is missing the “S” mintmark, it could be valuable.
Where can I sell a rare error dime?
You can sell rare coins through auctions, coin dealers, or online marketplaces like Heritage Auctions or eBay.
Are all error coins valuable?
Not all errors are worth a fortune, but those with extreme rarity and collector demand can be very valuable.
Final Thoughts
These two rare error dimes prove that even small minting mistakes can create huge opportunities for collectors. If you own a proof dime missing the “S” mintmark, you might be holding onto a small fortune!
Have you ever found a rare coin in your collection? Share your story in the comments below! And don’t forget to check out our latest articles on valuable pennies, quarters, and hidden coin treasures. Happy collecting! 🪙
