Rare Error Dimes: Rare error dimes have become a hot topic in the world of coin collecting, especially after two examples were recently sold for a jaw-dropping $850,000 combined. These coins, seemingly ordinary at first glance, hold extraordinary value due to unique minting mistakes that make them one-of-a-kind treasures. For numismatists and hobbyists alike, these error coins offer an exciting glimpse into the rarity and potential value hidden in small pieces of change.
In this article, we’ll take a closer look at the two remarkable dimes that fetched such high prices: the 1968-S No-S Proof Roosevelt Dime and the 1975 No-S Proof Roosevelt Dime. You’ll also learn how to identify rare error coins and discover what makes them so coveted in the numismatic world.
Overview: Rare Error Dimes
| Coin | Details | Recent Sale Price | Why It’s Rare |
| 1968-S No-S Proof Dime | Proof coin with a missing “S” mintmark that should appear below the date. | Over $400,000 | Limited examples exist; proof coin error. |
| 1975 No-S Proof Dime | Proof coin missing the “S” mintmark; only two known to exist. | $450,000 | Rarest proof dime ever made. |
Why Rare Error Dimes Are So Valuable
Unintentional Rarity
Minting errors occur when coins are improperly struck, and their rarity often makes them highly desirable among collectors. Unlike mass-produced coins, error coins have unique features that set them apart.
For example, both the 1968-S No-S Proof Dime and the 1975 No-S Proof Dime lack the “S” mintmark, a key identifier for proof coins minted in San Francisco. These oversights during production created coins with immense collector value.
Historical and Numismatic Appeal
Error coins tell a fascinating story about minting practices and serve as historical artifacts. Their imperfections are not flaws but rather rare anomalies that make them stand out in the coin world.
Demand Among Collectors
Enthusiasts often view error coins as the ultimate challenge, especially those with extremely low populations like the 1975 No-S Proof Dime, of which only two are known to exist. This intense demand drives up their market value significantly.
Spotlight on the 1968-S No-S Proof Dime
The 1968-S No-S Proof Dime is a perfect example of how a simple minting error can create a numismatic sensation. Proof coins are specially made for collectors, with sharp details and polished finishes. These coins are expected to undergo rigorous quality checks, making errors exceptionally rare.
This dime should feature the “S” mintmark below the date, indicating it was struck at the San Francisco Mint. However, a small number were mistakenly minted without this critical detail. In pristine condition, one of these coins recently sold for over $400,000, proving its value to the collecting community.
The Ultra-Rare 1975 No-S Proof Dime
The 1975 No-S Proof Dime takes rarity to an entirely new level. With only two known examples, this dime is considered one of the rarest coins ever produced by the U.S. Mint. Like the 1968 version, it was struck without the “S” mintmark, but its scarcity is unparalleled.
Collectors have long revered this coin for its extreme rarity and historical significance. It’s no surprise that one of these dimes fetched $450,000 at auction, solidifying its place as one of the most valuable coins in numismatics.
How to Identify Rare Error Dimes
1. Check for Missing Mintmarks
Proof coins from the San Francisco Mint are expected to bear an “S” mintmark below the year. A missing mintmark on a proof dime is a strong indicator of a rare error coin.
2. Inspect Coin Condition
Error coins in near-perfect condition are significantly more valuable. Look for coins with minimal wear and a sharp, mirror-like finish.
3. Look for Unique Features
Other features, such as overdates or doubled dies, can also indicate valuable errors. Close inspection with a magnifying glass or coin loupe is essential.
4. Seek Professional Grading
If you suspect you have a rare error coin, have it authenticated and graded by experts like the Professional Coin Grading Service (PCGS) or the Numismatic Guaranty Corporation (NGC). Their certification can confirm authenticity and increase the coin’s resale value.
Other Notable Error Coins
Rare error dimes aren’t the only treasures in numismatics. Here are a few other famous error coins worth noting:
- 1942/41 Mercury Dime Overdate
This error features overlapping dates, where 1941 is struck over with 1942. The unique design makes it a favorite among collectors. - 1955 Doubled Die Lincoln Penny
A striking error where the design elements appear doubled. This coin is highly sought after and easily recognizable. - 1970-S Small Date Lincoln Penny
A subtle variation in the date font distinguishes this penny, adding to its collector appeal.
Where to Find Rare Coins
Finding a rare error dime might seem like an impossible dream, but it’s not entirely out of reach. Here’s how to increase your chances:
- Check Your Change
While proof coins are unlikely to circulate, you might still find other valuable errors in loose change. - Inspect Old Collections
Inherited collections are a great place to discover hidden gems. Carefully examine coins for unusual features. - Attend Coin Shows and Auctions
Reputable dealers and auction houses often showcase error coins, providing a reliable way to purchase or learn more. - Join Numismatic Groups
Connecting with other collectors can help you learn about rare coins and stay informed about market trends.
FAQs About Rare Error Dimes
What is a mint error, and why are error coins valuable?
A mint error is a mistake made during the production of a coin, such as a missing mintmark or overdate. Their rarity makes them highly collectible and valuable.
How can I identify a No-S Proof Dime?
Proof dimes missing the “S” mintmark are rare errors. Look below the date; if the mintmark is absent, you may have a valuable coin.
Are all error coins valuable?
Not all errors fetch high prices. Rarity, condition, and collector demand determine a coin’s value.
How do I confirm if my coin is valuable?
Have it graded and authenticated by professional services like PCGS or NGC. This ensures its authenticity and provides a reliable valuation.
Where can I sell a rare error coin?
You can sell valuable coins through numismatic auctions, reputable dealers, or platforms like Heritage Auctions.
Final Thoughts
Rare error dimes like the 1968-S No-S Proof Dime and the 1975 No-S Proof Dime show how minting mistakes can create exceptional opportunities for collectors and investors alike. While finding one is rare, the potential payoff makes the hunt worthwhile. Always inspect your coins carefully—you never know what treasures might be hiding in plain sight!
Have you discovered a rare coin in your collection? Share your story in the comments below! For more insights into valuable coins, explore our other articles on pennies, quarters, and more.
