In October 2024, a seemingly ordinary ten-cent coin made headlines when it sold for an astonishing $506,250 at auction. This coin, the Rare 1975 “No S” Proof Dime, is no ordinary piece of change. Minted nearly 50 years ago, it has become a sensation in the numismatic world, not for its design but for a rare minting error that makes it one of the most sought-after coins in U.S. history.
The dime’s uniqueness lies in its missing “S” mint mark, which would typically indicate its origin at the San Francisco Mint. This oversight, combined with its pristine condition and extreme rarity, has elevated it to the status of a numismatic “Holy Grail.” With only two known examples in existence, the 1975 “No S” Proof Dime is a testament to how a simple mistake can transform an everyday object into a treasure.
Key Details of the 1975 “No S” Proof Dime
| Feature | Details |
|---|---|
| Year of Minting | 1975 |
| Mint | San Francisco Mint (intended) |
| Unique Feature | Missing “S” mint mark |
| Design | Portrait of Franklin D. Roosevelt |
| Initial Distribution | Part of over 2.8 million proof sets |
| Known Examples | Only two confirmed worldwide |
| Original Purchase | Acquired in 1978 for $18,200 |
| Sale Price (2024) | Sold for $506,250 at auction |
| Previous Record | Other example sold for $456,000 in 2019 |
What Makes This Dime So Valuable?
The 1975 “No S” Proof Dime stands out for several reasons:
- Rarity: Only two examples of this coin have ever been confirmed, making it one of the rarest modern U.S. coins.
- Minting Error: The absence of the “S” mint mark is a striking anomaly, especially on a proof coin designed for collectors.
- Condition: Graded Proof-67 by the Professional Coin Grading Service (PCGS), the coin is in impeccable condition, further enhancing its value.
- Historical Significance: As a symbol of a rare minting error, it represents a fascinating piece of numismatic history.
- Collector Demand: Coins with unique errors or features always attract significant attention and high prices in the market.
The Journey from Mint to Auction
The story of this dime is as intriguing as its rarity. In 1978, a collector purchased the coin for $18,200, recognizing its potential value. For over four decades, the dime was carefully stored in a bank vault, serving as both a prized possession and a financial safeguard.
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After the collector’s passing, the coin was inherited by his three sisters, who decided to consign it to GreatCollections, a leading auction house. When it went up for auction in October 2024, it sparked a bidding war among collectors worldwide, ultimately selling for a record-breaking $506,250.
A History of Record-Breaking Sales
This isn’t the first time the 1975 “No S” Proof Dime has made waves in the numismatic world. The only other known example of this coin set records in 2011 and 2019, selling for 349,600and349,600and456,000, respectively. Each sale reflects the growing fascination with
