The 50 State Quarters Program (1999–2008) and the America the Beautiful Quarters (2010–2021) released millions of quarters into public use, but not every coin was struck perfectly. Some quarters came with minting mistakes, making them more desirable to collectors.
When these errors are rare or visually striking, they greatly increase the coin’s market value. Even small flaws can make a big difference. These production issues create standout examples, often turning an ordinary coin into something much more valuable and collectible, sometimes fetching a premium far beyond their face value.
Common Types of Quarter Mint Errors
Below are some of the most common minting flaws that collectors actively seek out in quarters:
Doubled Die Errors: Caused by a misaligned strike that duplicates the design or letters.
Off-Center Strikes: The coin’s design is misaligned, leaving a blank area.
Die Cracks and Cuds: Raised marks caused by broken or damaged dies.
Missing Clad Layer: A layer of nickel is missing, exposing the copper underneath.
Wrong Planchet: The coin was struck on a blank meant for another denomination.
Wisconsin Extra Leaf Quarter (2004-D): Features an extra leaf on the corn stalk, a famous mistake.
Such defects significantly raise collector interest, sometimes making these coins worth thousands.
Top Valuable State Quarter Error Coins
Although today’s minting process is more precise, older errors still exist and have made certain quarters incredibly valuable. Collectors hunt for these mistakes, which stand out due to their rarity and uniqueness. While some are easy to spot, others require a close inspection.
Many of these coins have gained fame in the numismatic community for their distinctiveness and scarcity. From doubling to planchet errors, these unique pieces serve as examples of how minting imperfections can result in unexpected treasures. Below are nine state quarter error coins that are especially prized by collectors.
1. 2005-P Minnesota Quarter – Extra Tree Error
This coin shows a peaceful lake scene lined with trees, but some versions display strange “lumps” that resemble extra trees. These extra shapes appear to the right of the smallest tree on the coin’s reverse. A magnifying glass can help identify these added markings. If you spot the unusual shapes, you may possess a rare variety that collectors seek. It’s one of the most commonly searched-for state quarter errors because of how the doubling presents itself. The added detail creates an eye-catching feature.
Value: Up to $336 (MS66)
2. 1965 SMS Washington Quarter – Broadstruck Error
Though it’s not part of the state quarters collection, this Special Mint Set Washington quarter is notable for its broadstruck minting error. This means the coin was struck without a proper collar, causing its edges to spread out. As a result, the coin appears larger and flatter than normal. Its surfaces are typically very shiny and appealing due to the SMS finish. This visual appeal and the rarity of broadstruck examples from that year make it a favorite among collectors of mint anomalies.
Value: Varies; often collectible for its eye appeal.
3. 2004-D Wisconsin Quarter – Extra High Leaf
One of the most well-known state quarter errors features an extra corn leaf extending upward from the stalk. The added leaf is clearly visible and distinctly placed, making it easy to identify with the naked eye. Collectors have widely recognized and hunted this version since it was first discovered. The error adds intrigue to an already artistic coin design. While the standard version is common, the extra leaf variants are considerably rarer and command much higher prices in the collector market.
Value: Up to $2,530 (MS66)
4. 2004-D Wisconsin Quarter – Extra Low Leaf
This variation is another famous Wisconsin quarter error, but in this case, the added leaf points downward from the corn stalk. Though similar to the high leaf version, it’s considered a separate and distinct error. This type can also appear with no visible mint mark, although all were struck in Denver. The downward-pointing leaf appears almost like a drooping or fallen leaf and is similarly valued for its scarcity and visual prominence. Collectors prize both versions of this quirky mint mistake.
Value: Up to $6,000 (MS67)
5. 2009-D District of Columbia Quarter – Double Die
A doubled die error on this quarter creates noticeable distortion in the design and text, especially around the piano and the name “Ellington.” These doubling effects are often visible even without magnification, especially in high-grade examples. Duke Ellington’s image was already iconic, but this minting mistake adds an extra layer of interest. Because few examples were produced, certified versions are extremely rare. As with most doubled die errors, authentication is essential to verify its legitimacy before assigning value.
Value: Very rare; few known examples certified.
6. 1999-P Connecticut Quarter – Feeder Finger Error
Feeder fingers are tools used to guide blank coins into the minting press. Occasionally, these fingers malfunction or get in the way, resulting in flawed strikes. This Connecticut quarter has a distorted look because a feeder finger interfered during minting. The result is uneven or smeared design elements. It’s not a common error, and its rarity adds to its value. Collectors interested in mechanical issues during the minting process especially seek out coins like this for their unusual appearance and backstory.
Value: Can be worth thousands due to rarity.
7. 2002-P Indiana Quarter – Struck on Dime Planchet
This rare minting mistake happened when Indiana state quarters were struck on dime planchets, which are smaller than quarter blanks. Because of the size mismatch, parts of the coin’s design get cut off at the edges. These errors are easy to spot due to their unusual size and incomplete visuals. Collectors love wrong planchet errors because they’re relatively easy to verify and are not common. Such pieces usually receive high interest, especially when preserved in excellent condition with good details.
Value: Rare and collectible; specific value varies.
8. 1999-P Georgia Quarter – Double Denomination with Susan B. Anthony Dollar
This unique error happened when a Georgia state quarter design was accidentally struck on a blank intended for a Susan B. Anthony dollar. As a result, the coin displays a strange combination of features from both types of currency. These “double denomination” errors are incredibly rare and make for some of the most exciting discoveries in modern coinage. They’re highly desirable among experienced collectors and tend to draw high bids at auction when authenticated by a reputable third-party grading service.
Value: Several thousand dollars at auction.
9. 2000-P Maryland Quarter – Struck on Dime Planchet
This Maryland quarter shares the same type of mistake as the Indiana example: it was minted on a smaller dime planchet. As a result, the design appears too large for the coin’s surface, with Washington’s portrait nearly touching the rim. These wrong planchet errors are especially valuable when in mint state, showing minimal wear. Because they are easily distinguishable and rare, they remain among the most desirable state quarter minting errors. Collectors often seek them out to complete error collections.
Value: High due to scarcity; potentially thousands at auction.
FAQs
Which State Quarter Errors Are the Most Valuable?
Among the most valuable are:
2004-D Wisconsin Extra Leaf (High/Low) – $50 to $1,500+
1999-P Delaware “Spitting Horse” – $20 to $500+
2005-P Minnesota Doubled Die – $50 to $300+
2000-P New Hampshire Missing Clad Layer – $500+
1999 Georgia Off-Center Strike – Often hundreds to thousands
How Can I Identify an Error on My Quarter?
Look for these signs:
Doubled or shadowed lettering or images
Off-centered designs or gaps on the coin
Unexpected extra features, like an additional leaf
Copper showing through where nickel should be
Odd size or weight suggesting a wrong planchet
What Are State Quarter Errors Worth?
Value depends on rarity and condition:
Minor errors: $5–$50
Major errors: $100–$1,000+
Certified rarities: Up to $6,000 or higher
Where Can I Sell Error Quarters?
Error quarters can be sold at:
Dealers specializing in mint errors (e.g., Bullion Shark)
Coin conventions and shows
Grading services like PCGS or NGC for authentication
Are All Quarter Errors Valuable?
No, not all mint errors are worth big money.
Small flaws like die chips may only bring a few dollars.
However, rare and dramatic mistakes can be worth thousands.
Condition and certification will significantly affect market value.
Susan is a seasoned finance writer with a knack for breaking down complex money topics into clear, actionable advice. With years of experience in personal finance, investing, and market trends, she empowers readers to make smarter financial decisions. Her work has been featured in leading finance blogs and publications, where she combines sharp analysis with relatable storytelling. Whether it’s budgeting, wealth-building, or decoding the latest economic shifts, Susan’s mission is to help people take control of their financial future with confidence.