In the realm of numismatics, certain mint errors captivate collectors and enthusiasts alike. One such anomaly is the 1970-S Proof Washington Quarter struck on a 1941 Canadian quarter planchet.
This unique coin exemplifies a rare minting mishap, blending American and Canadian coinage elements.
Understanding the Minting Error
Proof coins are meticulously crafted specimens, produced with heightened precision and quality control. The creation of a proof coin on a foreign planchet is exceedingly uncommon, making this 1970-S quarter particularly noteworthy.
In this instance, a 1941 Canadian quarter, composed of 80% silver and 20% copper, was inadvertently used as the planchet for striking a 1970-S Proof Washington Quarter.
The resulting coin displays features from both the original Canadian design and the intended U.S. quarter design, creating a fascinating blend of imagery.
Key Features
| Feature | Description |
|---|---|
| Obverse Design | Overlapping images of George Washington and King George VI. Traces of the Canadian inscription “GEORGIVS VI D:G:REX ET IND:IMP:” are visible along the rim. |
| Reverse Design | Elements of the Canadian caribou design are faintly visible beneath the U.S. heraldic eagle. |
| Composition | 80% silver, 20% copper (inherited from the 1941 Canadian quarter). |
| Weight | Approximately 5.63 grams, consistent with the Canadian quarter specifications. |
| Edge | Reeded, as per standard quarter specifications. |
Discovery and Significance
This unique error coin was discovered among a collection of San Francisco proof errors auctioned by the State of California.
Authenticated and certified by the Numismatic Guaranty Corporation (NGC) as Proof 65, it stands as a testament to the intriguing anomalies that can emerge from the minting process.
The coin gained widespread attention, being featured in various publications and news outlets, and was listed for sale at $35,000.
Market Value and Collectibility
The rarity and unique nature of this coin significantly enhance its value. While standard 1970-S Proof Quarters may hold modest value, this particular error coin commands a substantial premium due to its distinctive characteristics and the story behind its creation.
Conclusion
The 1970-S Proof Washington Quarter struck on a 1941 Canadian quarter planchet represents a remarkable intersection of U.S. and Canadian numismatic history.
Its accidental creation and the subsequent blending of designs from two nations make it a prized possession for collectors and a fascinating study for numismatists.
FAQs
How did a Canadian quarter planchet end up in the U.S. Mint?
The exact circumstances remain unclear, but it is believed that a 1941 Canadian quarter was mistakenly included in the planchet supply at the San Francisco Mint, leading to this unique error.
What makes this coin so valuable?
Its rarity, the unusual minting error, and the combination of designs from two different countries significantly enhance its value among collectors.
Are there other known examples of this error?
This coin is considered unique, with no other known examples of a 1970-S Proof Quarter struck on a 1941 Canadian quarter planchet.
How can one authenticate such a coin?
Authentication should be conducted by reputable grading services like the Numismatic Guaranty Corporation (NGC), which can verify the coin’s authenticity and assign a grade.
Where can this coin be viewed or purchased?
The coin has been featured in various auctions and was listed for sale by Mike Byers, Inc. Interested collectors should consult reputable dealers or auction houses specializing in rare coins.
