5 Coins worth $100 Million are still in circulation – Most of us ignore our old coins thinking they are just “junk”, but did you know that those junk coins can change your fortune? Yes! There are some rare “dimes” (10 cent coins) in the US that sell for millions and can still be found accidentally floating around among the general public.
My street’s Uncle Bill and the $7,000 coin!
Last summer, my neighbour Uncle Bill—a retired postman—brought some coins from the bank just to do the laundry. One of those coins turned out to be a 1916-D Mercury dime worth $7,000 (approximately ₹5.8 lakhs)! “I was just collecting change for the laundry, never thought it would help repair my roof,” Uncle Bill said.
Such stories are not uncommon. Every year, people in the US accidentally find rare coins worth crores among the coins they have.
Now let’s know about those 5 most valuable dimes which may still be hidden somewhere in a jar, cupboard or a roll of coins in a bank.
1. 1894-S Barber Dime – Only 24 were made, if you find it, you will become a millionaire

In 1894, the San Francisco Mint made only 24 Barber dimes. Till date, only 9 of these have been found. The remaining 15 are still lost somewhere.
How to identify:
The coin will have the date “1894” and “UNITED STATES OF AMERICA” written on it. A small “S” mintmark will be visible on the back.
- 💰 Price: $1.3 million to $2 million (₹10 crore)
2. 1916-D Mercury Dime – Common looking, but extra valuable
The first edition of the Mercury Dime came out in 1916, and the Denver Mint only minted 2.64 lakh coins. Many are still circulating unidentified.
How to identify:
The front will have the date “1916” and the back will have a small “D” mintmark at the bottom.
- 💰 Price: $5,000 to $2.5 million (₹4 lakh to ₹2 crore)
3. 1975 No-S Proof Roosevelt Dime – Modern Mistake, Gold Mine
In 1975, some Proof Dimes were accidentally printed without the “S” mintmark. Only 2 have been found so far.
How to spot:
Look for a mirror-shiny dime in a proof set dated 1975. If it’s missing the “S” mintmark—you’ve found a treasure.
- 💰 Price: $5 lakh to $7.5 lakh (₹4 to ₹6 crore)
4. 1968 No-S Proof Roosevelt Dime – Anonymous but extremely valuable

Before the 1975 mistake, a similar thing happened in 1968. About 30 such dimes have been found, but experts believe many more are still hidden.
How to spot:
Look for a dime in a 1968 proof set that’s missing the “S” mintmark.
- 💰 Price: $20,000 to $85,000 (₹16 lakh to ₹70 lakh)
5. 1942/1 Overdate Mercury Dime – Look carefully, the date is everything
The 1941 date was mistakenly printed as 1942, creating an “overdated” dime. A minor mistake that could net millions in profits.
How to spot:
The 1942 date has a slight portion of the “1” peeking out from under the “2”.
- 💰 Price: $2,000 to $25,000 (₹1.6 lakh to ₹20 lakh)
Some true stories that can inspire
- Michael Larson, a school teacher, found a 1916-D dime worth $4,300 with a metal detector in a park.
- Eleanor Rodriguez, a nurse, found a 1968 No-S dime in her father’s drawer—it sold for $67,500.
- Jason Chen, a student, found a 1942/1 overdate dime in dime rolls he borrowed from a bank—it sold for $3,800.
How to find these rare dimes – here are some tips
- Check the family collection: Check old cabinets, dressers or lockers for hidden coins.
- Borrow dime rolls from the bank: Even a $10 roll could be worth millions.
- Pay attention to proof sets: Pay special attention to the 1968 and 1975 proof sets.
- Flea markets and estate sales: Uninformed sellers may accidentally sell treasures there.
Conclusion
An old coin lying around in your home could unlock your luck. The 5 dimes mentioned above are not just coins, but assets worth crores. So the next time you see an old coin—take a closer look. Who knows, you might be the hero of the next amazing discovery!
👉 What are you waiting for? Start checking your coins today!
FAQs 5 Coins worth $100 Million are still in circulation
Q. How to check the authenticity of such coins?
A. You can get a certificate from a certified numismatic organization like PCGS or NGC.
Q. Where can such rare coins be sold?
A. You can sell them on sites like eBay, Heritage Auctions or to a trusted collector.
Q. Can such coins be found with a metal detector?
A. Yes, many explorers find rare coins with a metal detector in old parks or houses.