Curved Clip Error Coin




Curved Clip Mint Error Coin: 1978-D Penny

A curved clip mint error coin is a type of numismatic error that occurs during the production of coins. In other words, a 1978-D penny curved clip mint error refers to a portion of the coin’s circumference being absent. This is due to a misalignment during the blanking or cutting process.

1978 penny error

Furthermore, the blanking process involves cutting round metal discs, called planchets from large sheets of metal. Occasionally, the cutting machine may malfunction or experience misalignment. This results in irregularly shaped planchets.  Moreover, the irregularly shaped planchet used to strike a coin, creates a clipped mint error.




Note the Crescent-shaped Indention

Essentially, a curved clip mint error is named because a missing portion of the planchet creates a curved or crescent-shaped indentation. The location and size of the curved clip can vary, but typically affects a small segment of the coin’s circumference.

1978 penny error list
Curved Clip Mint Error Coin Value

The value of a curved clip error coin may vary.  Moreover, it depends on several factors, such as the severity of the clip, the rarity of the coin, and the demand among collectors.  Additionally, the more pronounced and larger the curved clip, the more desirable the error coin becomes.




To determine the specific worth of a curved clip mint error coin, have it authenticated and appraised by a professional coin grading service or a reputable numismatist.  For a small fee, they’ll assess the coin’s condition, rarity, and market demand to provide a valuation estimate.

curved clip error coin lincoln penny error
Note the Blakesley Effect

The Blakesley Effect refers to a specific type of error that can occur during the minting process of coins. It’s named after a man named Blakesley, who first described this phenomenon.

mint error coins to look for

The Blakesley Effect specifically refers to the raised rim formed along the clipped edge of a coin.  A coin struck with insufficient force or misalignment, displaces the metal pushing it upward.  This causes the formation of a ridge or rim along the clipped area and a flattened area opposite the clip.




Coin collectors find these errors intriguing due to their unique appearance and the circumstances during minting process.  List your own mint error discoveries on Ebay by observing how others have listed theirs.

Curved Clip Error Coin 1978 penny errors

If you’ve found a clipped error coin you think is valuable, then consult with experts in the field to get an accurate assessment of its worth. Online coin groups such as coinauctionshelp.com are extremely valuable resources to be aware of.

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2019 Dime Doubled Die Reverse Variety

2019 Doubled Die Reverse Dime

2019 dime errors and varieties exist!  For instance, observe a 2019 doubled die reverse variety dime coin found in pocket change.  This American dime is worth a lot of money!  Due to its condition and rarity, it’s an easy $20.oo coin sold raw on Ebay.

Furthermore, it makes the rare dimes list of doubled die reverse dimes, and it’s valuable despite being found in circulation.  Moreover, all it took was a coin magnifying tool and a good look at the 10 cent coin. 

However, it’s important to know what to look for.  Furthermore, the best chance of finding American dimes worth money is by searching through uncirculated original bank wrapped rolls.

doubled die reverse dime 2019
Roosevelt Dime Errors and Varieties

Furthermore, doubled die dime variety listings to compare images are available on the internet via doubleddie.com.  Moreover, knowing where to look on each coin for doubling increases the likelihood of finding a doubled die reverse or obverse dime.  

Moreover, examining 2019 mint sets ensures a mint state grade coin specimen.  Error and variety coins increase the value of any collection. Did you know that there are 1996 w dimes worth money floating around in circulation?  They’re some of the most valuable dimes!

Coin collectors have paid thousands of dollars for doubled die dimes, because they’re rare collectibles.  For instance, the most valuable American dimes are worth a lot more than just ten centsLearn next about a 1945  Liberty Dime.  Check out other rare Roosevelt dime error coins to search for in circulation. 

Roosevelt Dimes Worth Money

Furthermore, a Roosevelt dime in pristine condition becomes valuable over time due to the wear and tear of dimes used in circulation.   Moreover, the most valuable US dimes are not as easy to spot but are as collectible as this doubled die reverse variety coin.  

Additionally, a dime in uncirculated or brand new condition that is also an error or variety drastically increases the value of the coin.  Finally, this website is a partnered associate and may contain affiliate links. Full disclosure is found here. Happy Hunting!

2015 Saratoga New York Quarter Errors, Varieties, and Values

2015 Saratoga New York Quarter Errors, Varieties, and Values

Have you found a 2015 Saratoga New York national park doubled die variety quarter? As shown in the images, the “doubling shows inside the lower right opening in the handle of General Burgoyne’s sword.” – John Wexler.  Saratoga New York quarter errors have asking prices of five dollars and up in raw condition on Ebay.

saratoga new york quarter 2015
New York National Park Quarter Design

“At Saratoga in the autumn of 1777, American forces met, defeated and forced a major British army to surrender.  Moreover, this crucial American victory renewed patriots’ hopes for independence, secured essential foreign recognition and support, and forever changed the face of the world.”

“Furthermore, the battlefield, a monument to the fallen and the restored country house of American General Philip Schuyler make up the three sites of Saratoga National Historical Park.  Additionally, it was established as a national site in 1938.” – usmint.gov

2015 saratoga quarter error value

New York Quarter Values

2015 Saratoga New York national park quarters have asking prices of two dollars and up in raw condition.  Observe the sold listings showing what 2015 New York quarter errors recently sold for on Ebay.  Furthermore, graded quarters are valued much higher.

Saratoga Quarter Values

For instance, a 2015 P Saratoga New York quarter graded MS68, sold for $140.00.  Furthermore,  a 2015 D Saratoga New York quarter graded MS67+, sold for $300.00.  Additionally, a 2015 S Saratoga New York national park quarter graded MS68, sold for $695.00.

However, those quarters are valuable as a result of high mint state grades. Quarter errors and varieties are worth money because of the uniqueness of each specimen.  Additionally, the grade has an influence on value.

2015 saratoga quarter error
2015 National Park Quarter Doubled Die Varieties

Furthermore, 2015 Saratoga New York quarters display different doubled die varieties. Visit doubleddie.com for more images to compare the differing areas that the doubling displays on 2015 New York national park quarters.

Additionally, the best chance of finding a rare error or variety in mint state condition is to search mint sets, or uncirculated original bank wrapped quarter rolls.

Furthermore, observe a rare 2020 W national park quarterThis website is a partnered associate and contains affiliate links, which enable me to earn commissions from various partners. Full disclosure is available here.  Partners include Ebay, Amazon, Google Adsense, and others.

2008 Alaska Quarter Errors, Varieties, & Values

2008 P Alaska Quarter Errors, Varieties, & Values

 2008 Alaska Quarter errors and varieties exist!  Moreover, I’ve found extra bear claws on 2008 state quarters.  Furthermore, unlike other coins I found exhibiting the extra claw, this quarter displays extra thick letters with die breaks on the devices of both sides of the coin. 

Alaska quarter error

Moreover, searching uncirculated original wrapped bank rolls of 2008 Alaska quarters is the best chance of finding a rare error or variety specimen in mint state grades.   Additionally, examining 2008 mint sets ensures a mint state grade specimen.

2008 Extra Bear Claw Alaska Quarter Variety

A 2008 P Alaska quarter with an extra claw and die chips found in the word “Land” once sold for $35 at Great Collections.   Most importantly, consider how some people flip houses while others learn how to flip coins. 

Alaska quarter

Furthermore, they can easily turn a twenty five cent quarter into several dollars or more.  The “extra claw” nickname caused this coin to become famous, so to speak.

A die break shows as the form of the extra claw, noted by the arrows in the image above.  Arrows note the die chips in L, A, and N of LAND seen in the image below.  Moreover,  die breaks display on the I, N, and W of In God We Trust, as shown in the image below.

2008 alaska quarter
Alaska State Quarter Variety Values

2008 extra bear claw quarters are listed on Ebay!  Furthermore, recent sold prices suggests current market value between $5 and $15 for this error coin.  However, that’s in raw or ungraded condition.  The more unique the die markings on a quarter, the more appealing coin collectors find it. 

The better the condition of the coin, the higher the value.  This coin is in circulated condition, as is evident by all the dings and scratches on the coin shown in the below images.  However, the “extra bear claw” variety along with other die breaks increases its value.

alaska state quarter error
Alaska Quarter Values

Above all, population of graded coins, and not just grade or the mintage itself determines the value of a coin.   Furthermore, there are a few Alaska quarter doubled die varieties listed on doubleddie.com.  The more flawless the coin, the higher the value.

2008 p alaska quarter error value

For example, a 2008-D Alaska Quarter graded MS69, sold at auction for $2,350.00.  Furthermore, a 2008-P Alaska Quarter graded MS68, sold at auction for $199.00.  Additionally, a 2008-S Silver quarter graded  PR70, sold for $127.00.

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The Great Land Alaska coin error
Coin Study & Examinations

If you haven’t read any books by famed numismatist John Wexler yet, listings are available via Amazon.  Additionally, Strike it Rich with Pocket Change by Ken Potter is recommended along with The CherryPickers’ Guide.  Finally, check out a 2008 Arizona Quarter with The Extra Cactus Leaf!

This website is a partnered associate and contains affiliate links, which enable me to earn commissions from various partners. Full disclosure is available here. Partners include Ebay, Amazon, Google Adsense, and others.

2020 Quarter Errors: U.S. Virgin Islands

2020 Salt River Bay Quarter Error: Die Breaks on the Mangrove Tree & Feeder Finger Errors

2020 quarter errors and varieties exist!  For instance, a 2020 Salt River Bay U.S. Virgin Islands quarter displays die breaks as extra leaves on the mangrove trees. Look for anomalies on 2020 Salt River Bay quarters!

2020 virgin island quarter error

Furthermore, note the feeder finger errors prominent on this quarter.  These error coins sell for $5 and up in raw condition on Ebay.  Moreover, people searching for 2020 w quarters with the privy mark should be looking for doubled die varieties and errors on quarters produced at every mint.  

salt river bay quarter error
2020 salt river bay quarter error value

For instance, this 2020 D Salt River Bay quarter displays a die chip as an extra leaf on the right side of the mangrove tree.  Furthermore, the arrows note the die breaks in the images.

2020 salt river bay quarter errors
salt river bay quarter errors

2020 Salt River Bay quarter errors sell for five dollars and up on Ebay.  The best chance of finding a rare and valuable 2020 U.S. Virgin Islands quarter is by searching through uncirculated original wrapped bank rolls.  Additionally, examining 2020 mint sets ensures a mint state grade specimen.

Feeding Finger Errors

Furthermore, feeder finger errors or die scrapes display on many coins.  Various errors exist on the Denver, Philadelphia, Sacramento, and West Point quarters. Moreover, feeder finger errors sell for five dollars and up in raw condition on Ebay.

Furthermore, aside from finger feeder errors, these quarters displays die breaks on both the left and right sides of the mangrove trees.  Moreover, feeder finger errors appear on both the obverse and reverse of 2020 Salt River Bay quarters.  

Additionally,  2020 U.S. Virgin Islands Salt River Bay obverse and reverse doubled die varieties exist.  In other words, images to compare 2020 quarters to are listed via varietyvista.com and doubleddie.com

Furthermore, check out a 2020 W Salt River Bay Quarter with a struck-through error!   This website is a partnered associate and contains affiliate links, which enable me to earn commissions from various partners. Full disclosure is available here.  Partners include Ebay, Amazon, Google Adsense, and others.

2020 American Samoa Quarter Errors, Varieties, & Values

2020 American Samoa Quarter Errors, Varieties, & Values

2020 American Samoa quarter errors and varieties exist!  It was a year rife with mistakes slipping out of the mint.  The United States Mint had to ramp up production of national park quarters because of the coin shortage.  

2020 bat quarter error
Arrows Note a Struck-through Bat Quarter Error

Moreover, pressure to produce a greater quantity impacted quality, meaning more error coins escaped the mint.  For instance, as shown, struck-through error quarters are most prominent on the American Samoa bat quarters.

2020 American Samoa Quarter Values

Furthermore, 2020 national park quarters are very valuable!  For instance, a 2020-D quarter graded MS67, sold at auction for $621.00.  Additionally, a 2020 S American Samoa quarter graded MS67, sold for $295.00.  These quarter dollar coins are valuable because of their high mint state grades.

2020 american samoa quarter error
Arrows note a form of doubling displayed in the letters "U" & "M" of UNUM

Moreover, a 2020 D American Samoa NP quarter graded MS68, sold for $330.00.  In other words, coins don’t have to have errors to be valuable, if they’re in pristine condition.  For instance, a 2020 P American Samoa NP quarter graded MS68, sold at auction for $400.00.

2020 American Samoa Quarter Errors & Varieties

Furthermore, did you note in the image above how doubling displays in several letters of “America” on this 2020 American Samoa national park quarter?  Additionally, did you know that machine doubling exists on a coin that’s also a genuine doubled die?   While not likely to sell at a coin shop, unique national park quarters with machine doubling do sell on Ebay

2020 quarter error list

Additionally, doubled die reverse variety quarters are rare and therefore extremely valuable.   The best chance of finding mint state grade doubled die reverse variety quarters is by searching through original wrapped bank rolls sold via Ebay.

How to Flip Coins like People Flip Houses

Furthermore, inexperienced rare coin hunters are making new discoveries just by doing their diligent research of learning what to look for.  For instance, once you know what you’ve found, take good pictures to upload and be honest in the description.  Then practice patience once you’ve created and launched your own Ebay listing.

bat quarter value

As a result, you should find yourself flipping coins online in the same way people flip houses.  Additionally, searching 2020 mint sets ensures a mint state grade proof specimen.

2020 National Park of American Samoa Quarter Design

The 2020 bat quarters feature a Samoan fruit bat mother hanging in a tree with her pup.  Unfortunately, the 2020 bat quarter dollar coin also gained notoriety over its design in 2020. 

2020 national park quarter errors
American Samoa Quarter Dollar

Excitedly, these quarters display feeder finger errors, struck-through errors (blind bat quarter,) off-center errors and more! However, also look for the West Point Mint special edition privy mark on 2020 quarters.

2020 w quarters also display errors and varieties.  Most importantly, get a  coin microscope!  It’s an essential tool required for successfully finding rare variety coins.

american samoa quarter error
An arrow notes a die chip on the bat's ear of a 2020 American Samoa Quarter
Where to Find Flawless Coins

Furthermore, unless you know where to get flawless coins, or come across one in pocket change, the 2020-w American Samoa quarters in high mint state grades are only available for purchase through private coin dealers.

Moreover,  major auction agencies will only consign a coin that’s graded and certified by a reputable grading company, such as ANACS.

American Samoa National Park History

The National Park of American Samoa is located southwest of Hawaii.  Furthermore, the site includes sections of three islands.  It’s one of the most remote in the U.S. National Park System.  Moreover, these islands from the mountaintops to the coast, are all tropical rain-forest.

The park’s area combined is 13,500 acres, with 4,000 acres underwater.”  Plan a visit to this not so secret paradiseTake the appropriate precautions as you make reservations and set yourself up to experience the adventure of a lifetime.

national park quarters

However, even if you can’t go on an extravagant national park vacation, you can still keep an eye out for a bat quarter error in pocket change.  Most importantly, keep watch for all new discoveries of National Park Quarter Doubled Die Reverse Varieties.   Happy hunting!

Coin Hunting Resources

Additionally, bookmark doubleddie.com and the master listings on varietyvista.com for doubled die images to use as references.  Invest in the tools and educational material to study.  For instance, “The Cherry-Picker’s Guide” is recommended by numerous coin shops.

2020 quarter error list
Arrow points to die chip on a bat wing
The Great American Coin Hunt & West Point Quarters

Finally, only two million of the West Point quarters were minted of each 2019 & 2020 special edition designs.  In other words, if you notice a W mint mark on the front of any quarters, then keep them.  They’re very rare and valuable! 

The Great American Coin Hunt is a positive historical event that took place during the years of 2019 and 2020.  Check out what a rare Special Edition 75th Privy Mark West Point Mint 2020 W Weir Farm Quarter with a die crack looks like next.

This website is a partnered associate and contains affiliate links, which enable me to earn commissions from various partners. Full disclosure is available here.  Partners include Ebay, Amazon, Google Adsense, and others.