The 1970-S Washington quarter has gained legendary status among coin collectors, thanks to a series of minting errors that elevate its value. Some of these error coins have fetched astonishing sums, with notable examples reaching over $500,000 at auctions. This guide highlights the top five errors that can transform an ordinary 1970-S quarter into a collector’s dream.
Double Die Obverse (DDO) Error
A Double Die Obverse (DDO) error results from a misalignment of the coin’s die during production, causing a doubling effect in the design elements. On the 1970-S quarter, this doubling is typically seen in the inscriptions “LIBERTY” and “IN GOD WE TRUST”.
Collectors prize clear and distinct doubling, which can significantly increase the coin’s value. Coins with highly visible DDO errors have fetched premium prices, making them one of the most sought-after varieties.
Off-Center Strikes
An off-center strike occurs when the coin blank is improperly positioned during minting. This misalignment results in a partial or shifted design, with some coins showing 10%, 25%, or even 50% off-center strikes.
The value of these coins depends on the degree of misalignment and their overall condition. Well-preserved off-center strike quarters, especially those with high levels of misalignment, are highly collectible and can command substantial sums.
Wrong Planchet Errors
A wrong planchet error happens when a coin is struck on a blank intended for a different denomination or even a foreign currency. For the 1970-S quarter, examples exist where coins were struck on dime planchets or other incorrect blanks, leading to noticeable differences in size, weight, or composition.
These errors are exceptionally rare and draw significant attention from collectors. Coins with this error type have sold for six-figure sums at auctions, underscoring their unique appeal.
Clipped Planchet
Clipped planchet errors occur when a portion of the coin blank is missing before the coin is struck. The resulting coin has a visible section cut out, which can range from a small notch to a large missing portion.
In the 1970-S quarter, clipped planchet errors are uncommon and are evaluated based on the size of the clip and the coin’s condition. Larger or more symmetrical clips often fetch higher premiums, especially when paired with minimal wear.
Broad Strike
A broad strike error arises when a coin is minted without the retaining collar that typically shapes its edge. As a result, the metal spreads out, creating a coin with a larger diameter and a distorted design.
Broad strikes in the 1970-S quarter are rare and highly desirable, especially when the coin remains in excellent condition. These errors highlight the intricate processes behind minting and the occasional mishaps that result in collectible rarities.
Error Types and Value Overview
| Error Type | Description | Value Range | Rarity Level | Notable Sales |
|---|---|---|---|---|
| Double Die Obverse | Doubling in inscriptions like “LIBERTY” and “IN GOD WE TRUST” | High | Rare | Over $500,000 at auctions |
| Off-Center Strike | Misaligned design due to improper blank alignment | Moderate to High | Uncommon | Tens of thousands of dollars |
| Wrong Planchet | Coin struck on a blank meant for a different denomination | High | Very Rare | Six-figure sums |
| Clipped Planchet | Missing portion of the coin due to incomplete blank | Variable | Uncommon | Varies by clip size/condition |
| Broad Strike | Absence of retaining collar leading to expanded diameter | Moderate to High | Rare | Premiums in excellent condition |
How to Identify Error Coins
Spotting these errors requires a keen eye and, often, magnification tools to examine the coin’s details. Look for doubling in inscriptions, unusual shapes, or misalignments in the design.
For authentication and accurate valuation, consult professional numismatists or submit the coin to reputable grading services such as PCGS (Professional Coin Grading Service) or NGC (Numismatic Guaranty Corporation). These organizations can confirm the error and provide a grade, which significantly influences its market value.
Owning a 1970-S Washington quarter with a minting error is like holding a piece of history. These coins not only reflect the complexities of minting but also serve as fascinating artifacts of numismatic artistry. Their rarity and value make them cherished treasures in any coin collection.
What makes the 1970-S quarter with errors so valuable?
The rarity and uniqueness of minting errors, combined with collector demand, significantly enhance their value. Specific errors, like the Double Die Obverse, are particularly sought after.
How can I tell if my 1970-S quarter has an error?
Examine the coin closely for anomalies like doubling in inscriptions, misaligned designs, or unusual sizes. Professional grading services can confirm any errors.
Are error coins always valuable?
Not all errors hold high value. Factors such as rarity, condition, and demand determine their worth.
