The 1970-S Washington quarter holds a special place in the world of coin collecting, not just for its historical significance but also for the minting errors that can transform an ordinary coin into a numismatic treasure. Some of these error coins have sold for over $500,000, making them a hot commodity among collectors.
Let’s look into the top five errors that could make your 1970-S quarter worth a fortune.
Double Die Obverse (DDO) Error
A Double Die Obverse (DDO) error is one of the most sought-after mistakes in coin collecting. This error occurs when the coin’s die is misaligned, causing doubling in the design.
- Key Features: In the 1970-S quarter, doubling is often visible in the words “LIBERTY” and “IN GOD WE TRUST.”
- Value: Clear and distinct DDO errors can fetch hundreds of thousands of dollars, with one example exceeding $500,000 at auction.
Spotting this error requires careful magnification, so if you suspect your coin has it, get it professionally inspected.
Off-Center Strikes
An off-center strike happens when the coin blank is not correctly aligned during the minting process. The resulting coin has a design that appears shifted, with part of the blank unstruck.
- Degrees of Error: These errors can range from 10% to 50% off-center.
- Value: The more off-center the design, the rarer and more valuable the coin. Well-preserved examples can command tens of thousands of dollars.
The extent of misalignment and overall condition significantly influence the coin’s market value.
Wrong Planchet Errors
A wrong planchet error is one of the rarest and most intriguing minting mistakes. This occurs when a coin is struck on a blank intended for a different denomination or even a foreign currency.
- What to Look For: A 1970-S quarter struck on a dime planchet would appear smaller and lighter than a standard quarter.
- Value: Coins with this error often sell for six-figure sums, depending on their rarity and condition.
These unique anomalies are prized for their rarity and the story they tell about minting mishaps.
Clipped Planchet
A clipped planchet error happens when a portion of the coin blank is missing before it’s struck. This results in a coin with a curved or straight-edged missing section.
- Types of Clips: Clips can be minor or significant, affecting the coin’s overall appearance.
- Value: The value varies based on the size and visibility of the clip, as well as the coin’s condition.
While not as valuable as some other errors, clipped planchet coins are still uncommon and highly collectible.
Broad Strike
A broad strike error occurs when a coin is struck outside the retaining collar, which typically shapes its edge. This results in a coin with a larger-than-normal diameter and often a distorted design.
- Key Features: Broad strikes appear wider and flatter than typical coins.
- Value: Well-preserved broad strike errors on a 1970-S quarter can fetch significant premiums, especially in excellent condition.
Broad strikes are rare, making them a notable addition to any collection.
Summary Table
| Error Type | Description | Value Range | Rarity Level | Notable Sales |
|---|---|---|---|---|
| Double Die Obverse | Doubling in inscriptions like “LIBERTY” | High | Rare | Over $500,000 at auctions |
| Off-Center Strike | Misaligned design due to improper blank placement | Moderate to High | Uncommon | Tens of thousands of dollars |
| Wrong Planchet | Struck on a blank for a different denomination | High | Very Rare | Six-figure sums |
| Clipped Planchet | Missing portion of the coin’s blank | Variable | Uncommon | Varies based on clip size and condition |
| Broad Strike | Absence of retaining collar, expanded diameter | Moderate to High | Rare | Significant premiums in excellent condition |
How to Identify
To identify these errors in a 1970-S quarter, you’ll need a keen eye and tools like a magnifying glass or loupe. Focus on details such as misaligned designs, unusual sizes, or missing sections. If you believe you’ve found a valuable error, seek authentication from professional numismatists or grading services like PCGS or NGC.
Owning a 1970-S quarter with one of these errors is like holding a piece of minting history. These coins not only reflect the complexities of coin production but also provide a tangible connection to the fascinating world of numismatics.
FAQs
What is a Double Die Obverse error?
It’s a doubling in the design caused by misaligned dies.
How rare are off-center strikes?
They’re uncommon and valued based on misalignment degree.
What’s a wrong planchet error?
A coin struck on a blank meant for a different denomination.
Are clipped planchets valuable?
Their value depends on the size of the clip and condition.
How can I identify a broad strike?
Look for a coin larger than usual with a distorted design.
