The world of rare coin collecting is filled with hidden treasures, and the 1970-S quarter is one of the most coveted finds among collectors.
While many 1970-S quarters are worth their face value, certain error variants have been sold for astronomical prices—over $500,000 in some cases! What makes these quarters so special?
In this article, we’ll explore the top five errors that can turn a standard 1970-S quarter into a rare and valuable collector’s item.
1. Double Die Obverse (DDO) Error
What is the DDO Error?
The Double Die Obverse (DDO) is one of the most exciting errors in the coin collecting world. This happens when the die used to strike the coin is misaligned during production, causing the design elements to be duplicated.
On the 1970-S quarter, the doubling is most evident in the lettering—particularly in “LIBERTY” and “IN GOD WE TRUST.”
Why It’s Valuable
A clean and distinct DDO error on a 1970-S quarter can significantly increase its value. Because this error is highly recognizable, it’s in high demand among collectors.
Some of these coins have been known to fetch up to $500,000 or more, depending on the quality and clarity of the doubling.
2. Off-Center Strikes
What is an Off-Center Strike?
An off-center strike occurs when the coin blank is misaligned in the press, resulting in a design that is cut off or partially missing.
For the 1970-S quarter, this means that parts of the Washington portrait or the inscriptions could be missing, creating a visually distinct and rare coin.
Why It’s Valuable
The value of an off-center strike depends on how misaligned the coin is. If the strike is off by 10%, the value is lower, but coins with 50% off-center strikes can command a hefty price.
Well-preserved examples of this error can sell for tens of thousands of dollars due to their rarity and distinctive look.
3. Wrong Planchet Errors
What is a Wrong Planchet Error?
A wrong planchet error happens when a coin is struck on a blank that is meant for a different denomination or even a foreign coin.
For the 1970-S quarter, this means the coin could be struck on a dime planchet or a foreign currency planchet. These errors are particularly rare and highly sought after.
Why It’s Valuable
Since the minting process involves specific planchets, any mistake in this step can lead to highly collectible coins.
Coins struck on wrong planchets are not only rare but also intriguing, as they deviate from the standard minting process. Such coins can be valued in the six figures due to their scarcity and unique nature.
4. Clipped Planchet Errors
What is a Clipped Planchet Error?
A clipped planchet occurs when the coin blank is improperly cut, leaving a bite-like indentation on the edge of the coin. For 1970-S quarters, this error is relatively uncommon, which makes it more valuable to collectors.
Why It’s Valuable
The more pronounced and clean the clipped edge, the higher the value of the coin. Clipped planchet errors are sought after because they are visually striking and represent a production mistake.
These coins are highly collectible, and in excellent condition, they can be worth thousands of dollars.
5. Proof Coins with Mint Errors
What is a Mint Error on Proof Coins?
The 1970-S quarter was part of a special proof set designed for collectors, and although these coins were made with the utmost care, they were not immune to minting errors.
Some proof coins exhibit issues like die cracks, incomplete strikes, or double images. These errors on proof coins are rare and increase their value.
Why It’s Valuable
Proof coins are already considered premium quality due to their careful production, and any mint error found on them makes them even more valuable.
These coins are often priced higher due to their rarity and quality. Well-preserved proof coins with mint errors can command prices well above $1,000.
| Error | Description | Potential Value |
|---|---|---|
| Double Die Obverse (DDO) | Doubling on lettering and motto due to misalignment of the die. | Up to $500,000+ |
| Off-Center Strike | Misalignment of the coin blank, leading to a portion of the design being missing. | Tens of thousands |
| Wrong Planchet Error | Coin struck on a planchet meant for a different denomination. | Six figures |
| Clipped Planchet Error | Missing piece from the coin’s edge due to improper cutting of the planchet. | Thousands of dollars |
| Proof Coins with Mint Errors | Errors like die cracks or incomplete strikes found on proof coins. | Over $1,000 |
The 1970-S quarter is a prime example of how minting errors can turn an ordinary coin into a rare treasure worth hundreds of thousands of dollars.
Whether it’s a double die obverse, off-center strike, or wrong planchet, these coins are in high demand among collectors. If you happen to find one of these rare quarters, it could be worth significantly more than just its face value.
Always remember to have your coins authenticated by professionals to ensure you’re holding onto a valuable piece of history.
How do I know if my 1970-S quarter has a Double Die Obverse?
To identify a DDO error, carefully examine the lettering, especially “LIBERTY” and “IN GOD WE TRUST.” If you notice visible doubling, you may have a valuable coin.
What makes the 1970-S quarter with a wrong planchet so valuable?
A wrong planchet error occurs when a coin is struck on a blank meant for another coin or foreign currency, making it extremely rare and highly valuable to collectors.
How can I protect my valuable 1970-S quarter?
Store your rare coins in a protective case to prevent scratches and wear. Always handle them by the edges to avoid damage.
