Most people think dimes are just worth ten cents—but that’s not always true. Rare minting mistakes can turn ordinary coins into collector’s gold, literally. Certain Roosevelt dimes with mint errors have sold for hundreds of thousands of dollars, and some may still be hiding in circulation. If you’re a coin enthusiast or just curious about your spare change, these rare dimes might be worth checking out.
1. 1965 Roosevelt Dime Struck on Silver Planchet
In 1965, the U.S. Mint transitioned from 90% silver dimes to a copper-nickel clad composition. However, a small number of 1965 dimes were accidentally struck on leftover silver planchets from 1964. These coins weigh slightly more (2.5g vs. 2.27g), have a shiny silver appearance, and lack the copper-colored edge found in clad coins. A genuine example in high-grade condition can sell for $6,000 to $10,000, making it a valuable mint error for collectors.
2. 1970 Roosevelt Dime No S Proof Error
One of the most famous modern dime errors is the 1970 No S Proof Roosevelt Dime. These dimes were struck at the San Francisco Mint but were missing the “S” mintmark, which is supposed to be present on all proof coins from that mint. This happened due to a die error and only a handful were made. With just a few known to exist, these proof dimes are extremely rare and desirable, commanding prices of up to $500,000 in top condition.
3. 1982 Roosevelt Dime Missing Mint Mark
In 1982, the Philadelphia Mint produced dimes without the “P” mintmark, which had become standard starting in 1980. This mint error happened when some dies were mistakenly not punched with the “P” mark. While more common than the 1970 No-S error, it remains a significant collector’s find. A 1982 No-P Roosevelt Dime in excellent condition can easily be worth $300 to over $1,000, depending on rarity and preservation.
These rare dimes prove that small coins can hold big value—especially when mint errors are involved. From a silver slip-up in 1965 to a missing mintmark in 1970 and another in 1982, these mistakes have become prized possessions. The key is to stay informed, check your change carefully, and consider having any suspicious finds appraised or professionally graded. You never know—you might be holding a tiny coin with a huge payoff.
FAQ’s:
1. How do I check if my 1965 dime is silver?
Use a precise scale to weigh it. Silver versions weigh around 2.5g and lack the copper stripe on the edge.
2. What makes the 1970 No S Proof Dime so rare?
It was a minting mistake on proof coins, which are specially made and inspected—making this error extremely rare and valuable.
3. Can I find a 1982 No-P dime in regular circulation?
Yes, though rare, some 1982 No-P dimes have been found in change or old coin collections.
4. Is it worth getting these coins graded?
Absolutely. Grading helps authenticate the error and can significantly increase the coin’s market value.
5. Where can I sell a rare mint error dime?
Trusted options include online auctions, certified coin dealers, or professional numismatic auction houses like Heritage Auctions.
