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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2021 Native American Dollar

2021 Native American Dollar Errors, Varieties, & Values

2021 Native American dollar error and variety coins exist!  For instance, a thorough examination detected an improperly annealed or sintered planchet error, thereby making this a nice collectible error coin.  Furthermore, observe the anomalies on a collectible 2021 Sacagawea Dollar.  

native american dollar 2021

The 2021 Native American dollar coin medal program represents Native American military services.  Moreover, the best approach for finding a rare Native American dollar coin error or variety like this, is to search through original wrapped uncirculated rolls of Native American dollars.  Additionally, searching 2021 mint sets ensures a mint state grade specimen.

Native American History & Heritage

In 2009 the United States Mint began minting and issuing $1 coins, featuring designs celebrating the important contributions made by Native Americans to the history and development of the United States.”- PCGS.com

2021 Native American Dollar error value
2021 Native American Dollar Design

“The obverse design displays Sacagawea carrying her infant son Jean Baptiste.  Furthermore, the reverse shows stars representing five branches of the U.S. military in the foreground, while a circle provides an additional reference to Native Americans.

Moreover, Native Americans have received recognition for their service, including five Medals of Honor during World War II.  Furthermore, their exemplary record of military service continues to this day.” – usmint.gov

military coin 2021
Sacagawea's Military Services as a CodeTalker

“In 1804, President Thomas Jefferson sent Meriwether Lewis and William Clark on the now-legendary transcontinental expedition to explore the American West.

He instructed them to search for the fabled Northwest Passage from the Missouri River to the Pacific Ocean, but he also desired firsthand knowledge of the land, its inhabitants, its vegetation, its mineral products, and its animal life and habitat.” – sos.mo.gov.

“While at Fort Mandan, Lewis and Clark met French-Canadian trapper Toussaint Charbonneau and hired him as an interpreter.  Furthermore, they allowed his pregnant Shoshone Native American wife to join him on the expedition.

Lewis and Clark hoped she could help them communicate by translating for them with any Shoshone encountered on their journey.  On February 11, 1805, Sacagawea gave birth to a son and named him Jean Baptiste.  As a result of her skills, she became an invaluable and respected asset for Lewis and Clark.” – History.com

2021 native american dollar value
2021 Native American Dollar Mintage

“The 2021 Native American Dollar is the lowest minted in more than a decade of mintages before them, with only 2.52 million produced as the total combined with 1.26 million produced by each the Denver and Pennsylvania mints.” – coinnews.net

The 2021 Native American dollar is made of 77% Copper, 12% Zinc, and 1% other, over a pure Copper core.  It weighs 8.1 grams. The golden dollar coin is not made of actual gold, but obtained its name for its golden appearance.

dollar coin error list
Native American Dollar Coin Varieties

Major grading services recognize the up or down imprinting, or orientation of the edge lettering on Presidential and Sacagawea Dollars.  TYPE/POSITION A means that the edge lettering reads upside-down when Sacagawea’s portrait faces up.  TYPE/POSITION B means that the edge lettering reads normally when Sacagawea’s portrait faces up – greatcollections.com

rare native american dollar
2021 Native American Dollar Values

A 2021-P $1 Native American Position Type B graded MS67, sold at auction for $45.00.   Furthermore, a 2021-P $1 Native American Position Type A graded MS69, sold at auction for $172.00.

2021 native american dollar improperly annealed or sintered planchet mint error
Improperly Annealed or Sintered Planchet Mint Error

“Numismatists may refer to the surface discoloration as improperly washed or burnt planchets.  ANACS refers to these as an “Improperly Mixed Alloy.”  PCGS refer to them as struck on “Sintered Planchets.”

NGC calls them “Improperly Annealed Planchets.”  Improperly annealed planchets can take on a variety of colors, from black to copper red.  This error is caused by over-heating the planchets.” – Ken Potter

improperly annealed sintered planchet mint error
Native American Dollar Errors

A most famous Sacagawea coin error is the 2014-D Sacagawea mule dollar.  It has the presidential design on the reverse. – coinworld.com Additionally, rotated die errors and doubled edge lettering are other errors to look for on these dollar coins.  Moreover, some Sacagawea dollars may display weak edge lettering, partial edge lettering, or even doubled edge lettering.

2021 dollar error

“Edge lettering wasn’t on Sacagawea Dollars until 2009.  However, some still slipped away from the mint without the edge lettering.  First, pay attention to the design elements and devices. 

Then look for abnormalities and weigh the coins.  Finally, compare a suspected die variety to a common coin to help identify true differences.”- TheSpruceCrafts

2021 dollar error list
Doubled Die Variety & Error Dollar Coins

Additionally, varietyvista.com has a 2007 P Sacagawea doubled die reverse listed to compare coins with.  Furthermore, look for doubling of the stars!  Furthermore, “American Numismatic Association (ANA) Authenticator Brian Silliman verified that the 2000 Sacagawea $1 coin struck on a hollow-center planchet was certainly legitimate, and potentially worth around $10,000.00. –  money.org.

Moreover, a rare 2000-P $1 Sacagawea Dollar was discovered as struck on an Susan B Anthony Dollar Planchet.  That dollar coin error sold for more than $6000.00!  Additionally, observe the recent sold listings of Sacagawea dollar coins on Ebay!

Moreover, doubled and overlapped edge lettering increases value and can be several hundred dollars in certain grades and dates.  – coinauctionshelp.com

This website is a partnered associate and may contain affiliate links. Full disclosure is found here.   Finally, check out a 2019 Lincoln cent with a partial plating errorHappy Treasure Coin Hunting!

2016 West Virginia Quarter

2016 West Virginia Harpers Ferry John Brown’s Fort National Park Quarter Coin

2016 West Virginia quarter errors and varieties exist! For instance, 2016 West Virginia Harpers Ferry John Brown’s Fort Quarter is known for several doubled die varieties.  

2016 harpers ferry quarter error
Arrows note a form of doubling of the middle barrel on a 2016 Harpers Ferry Quarter

However, the doubling is difficult to see in the windows without a magnifying tool or jewelry loupe.  That’s why a coin microscope is a vital tool for finding mint errors and varieties like this 2016 quarter.

2016 West Virginia Quarter Values

Furthermore, the value of 2016 West Virginia quarter errors in raw condition range between two and five dollars on Ebay.   Moreover, records show that a 2016-P 25C Harpers Ferry NP graded MS68 sold for $325.00.  

harpers ferry quarter errors
Arrows note die breaks on a 2016 Harpers Ferry John Brown's Fort quarter

Additionally, a 2016-D 25C Harpers Ferry NP quarter graded MS67 sold for $125.00.   However, those West Virginia quarters are in nearly flawless condition.

Furthermore, serious error coin detectives tend to buy original unwrapped bank rolls of quarters or unopened mint sets to search through for variety and error coins. That’s because the coins in flawless condition are the most valuable of die variety and coin errors.

2016 john brown's fort quarter error
Arrows note doubling of the windows on a John Brown's Fort 2016 Quarter

In other words, the lowest population of the highest grades do obtain the highest value.  However, variety and error coins don’t have to be in flawless condition to be of great value.  For instance, observe the asking prices for  rare struck through error coins on Ebay!  

2016 John Brown's Fort National Park Quarter Design

Moreover,  John Brown’s Fort is located at the meeting of the Potomac and Shenandoah Rivers.  Furthermore, the history of Harpers Ferry involves a diverse number of people and events influencing the course of America’s national history. 

2016 quarter errors
Arrow notes a pre-die-break on a 2016 Harpers Ferry National Park Quarter Dollar

Harpers Ferry witnessed the first successful application of interchangeable manufacture, the arrival of the first successful American railroad.  In other words, the railroad enhanced America’s economy.




John Brown’s attack on slavery, the largest surrender of Federal troops during the Civil War, and the education of former slaves in one of the earliest integrated schools in the United States.  Education of all peoples still contributes to enhancing economical evolution to this day.

john brown's fort quarter value
Arrow notes a die break on the 2016 John Brown's Fort Quarter

Furthermore, this place was established as a national site in 1944. That is why the reverse of 2016 West Virginia quarters feature John Brown’s Fort, at the site of John Brown’s last stand during his raid on the Harpers Ferry Armory.- usmint.gov.

2016 Harpers Ferry Quarter Errors & Varieties To Look For

First, watch the full quarter examination in the video below.  Then visit doubleddie.com for more images of doubled die coin variety 2016 quarters to view and compare your rare coins with. 

Furthermore, if you’ve got a rare coin you want to sell, then take good photos of the obverse and reverse and list it on Ebay with accurate descriptions. Additionally, get an idea about how to list your coin by looking at the examples of others.   Finally, check out an examination of a 2016 North Dakota national park quarter error with pictures!

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2018 Wisconsin Quarter Apostle Islands




2018 Wisconsin Apostle Islands National Park Quarter Errors, Varieties, & Values

2018 Wisconsin Apostle Islands quarter errors and varieties exist!  For instance, observe this Wisconsin quarter displaying interior die breaks.  Additionally, Wisconsin quarter value depends on various factors, including the condition of the coin. The better a coin’s condition the more it’s worth.  

2018 apostle islands quarter error
Arrows note an interior die break on a 2018 Wisconsin National Park Quarter

Furthermore, note the arrows in the image above pointing at an interior die break.  The anomaly makes the cliff appear to display a “falling rocks” error.  Moreover, anomalies exist not only in on the cliff areas on the bluff, but also on the kayaker.  




2018 Wisconsin Quarter Values

Values of coins fluctuate in the market, especially when any demand is higher than the supply.  Depending on how pronounced an error or anomaly is, a 2018 Wisconsin national park quarter error like this may sell for five dollars and up in raw condition on Ebay.  

However, graded and authenticated 2018 Wisconsin quarters with a high mint state grade increase in value.  For instance, a 2018-P 25C Apostle Islands NP Quarter sold at auction for over $2000.00.  

2018 quarter error value
Arrows note die chips on an Apostle Islands quarter

Meanwhile, researching the current listings on market places like Ebay helps determine going market prices of quarters in raw or ungraded condition.  A USB Coin Microscope is necessary to find varieties and errors.




Selling Error Coins Online

First, consider whether or not a coin is worth the cost of having sent off for grading.  For instance, sometimes the return of investment isn’t worth the original cost of investment, and coins can be auctioned or sold just as easily in protective coin sleeves otherwise known as 2X2 coin flips.

wisconsin 2018 quarter error
Arrows note an interior die break on a 2018 Apostle Islands National Park Quarter

Furthermore, people sell coins online all the time just by using clear images and accurate descriptions.  Additionally, the more honest and reasonable a seller is, the more trust they earn, and the higher their customer ratings.

Apostle Islands National Park Quarter Design

Next, observe the reverse of a 2018 Wisconsin Apostle Islands National Park quarter.  It depicts the sea caves at Devil’s Island and a kayaker paddling, with the lighthouse in the background. 

Apostle Islands quarter error
Falling Rocks on Devil's Island 2018 Quarter

Wisconsin’s Apostle Islands National Lakeshore was established in 1970.”  Note the arrows indicating a large interior die break appearing as though rocks are falling off the cliff.  Falling Rocks signs around cliffs are important to heed.  Landslides are no joke either.

Furthermore, the park includes 21 islands in Lake Superior and a 12-mile-long strip of mainland shoreline.  Additionally, the park features sand beaches and coves; spectacular sea caves; forests; a diverse population of birds, mammals, amphibians, and fish; and a number of lighthouses and lighthouse complexes.” – USMINT

rolling stone quarter error
Arrow note a falling rock on a Wisconsin National Park Quarter

Observe a falling stone appear to be rolling off the cliff on a national park quarter, as noted with arrows in the image above.  Additional arrows note die breaks that appears as extra rocks or stones in the image below.

apostle islands wisconsin quarter error

Furthermore, interior die breaks take place in various areas on 2018 Wisconsin quarters, as noted by arrows in the image above and again in the photo below. 

2018 wisconsin quarter error




2018 quarter errors

Furthermore, observe the beginning of a die break noted with arrows in the image above.  The anomaly isn’t as prominent as others.  However, it’s still worth noting.   

Moreover, the best chance of obtaining an apostle islands quarter in a high mint state grade search mint sets or to purchase and search through original wrapped bank rolls.

2018 Wisconsin Apostle Island Quarter Error Coin Examination

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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.

1979 Susan B. Anthony Dollar Coin

1979 Susan B. Anthony Dollar Coin Errors, Varieties, and Values

1979 dollar coin errors and varieties exist!  If your 1979 SBA dollar is not an error or variety coin, then values will depend on its condition.   For instance,  observe a 1979-D narrow rim far date variety coin.  It’s the second most common of any 1979 Susan B Anthony dollar coins, having a generous mintage of 288,015,744 million.  

1979 susan b anthony dollar coin value
1979 Susan B. Anthony Dollar Near & Far Date Coin Varieties

However, all Susan B Anthony dollar coins are collectible for various reasons.  For instance, the obverse die design was modified with a “wider” rim in late 1979.   Moreover, that design change affects the P mint mark dollars only.  Therefore, it’s the most scarce of Susan B. Anthony mintage varieties.  Additionally, observe the reverse of the coin for a “Full Talon Susan B. Anthony Dollar.” 

1979 Susan B. Anthony Dollar Coin Values

The condition of any coin has an impact on its value.  In other words, the more flawless the coin the greater the value.  For instance, a 1979 P Susan B Anthony $1 graded MS67, sold for $15,275.00.  Furthermore, a 1979 D Susan B Anthony dollar graded MS68, sold for $1528.00.

susan b anthony dollar coin

Additionally, a 1979 S Susan B Anthony dollar graded MS68, sold for $15,000.00.   Furthermore, the best chance of finding an uncirculated Susan B. Anthony dollar coin error or variety in mint state condition is by searching through original wrapped bank rolls.   Additionally, examining 1979 mint sets ensures a mint state grade specimen.

History of the Susan B. Anthony Coin

Coins featuring Susan B. Anthony were first issued by the United States Mint in 1979.  Moreover, it replaced the Eisenhower Dollar.  Furthermore, it was the first time a woman other than lady liberty appeared on a circulating coin. However, it wasn’t popular in circulation.  As a result, it only has only four dates.  Susan B Anthony dollar dollar coins were minted from 1979 to 1981, and in 1999.

susan b anthony coin
Collectible 1979 Dollar Coins

Originally, the coin was not popular among the public due to it to its likeness to the quarter dollar.   Furthermore, it made it easily mistaken for a quarter and accidentally spent as one.  However, it makes for a fine collectible coin.  Additionally, the various varieties add to the excitement of collecting them.  Moreover, a few are known to be quite significant, and coin collectors have paid far more than face value for them.

Furthermore, the 1979 Susan B. Anthony dollar is one of the most notorious coins in the history of United States coinage.  “On the surface, the SBA Dollar had the best of intentions in honoring a recognizable woman.” – usgoldbureau.com

1979 one dollar coin
The Right of Women to Vote

Susan B. Anthony was an American social reformer and women’s rights activist.  In other words, she played a pivotal role in the women’s suffrage movement.  Moreover, she willfully marched to the voting polls and cast her vote.  This was at a time when women weren’t permitted to vote. 

After casting her vote, Susan was arrested and charged for breaking the law.  In August of 2020 Susan B. Anthony received a posthumous pardon by President Donald J. Trump.  The pardoning placed the spotlight on the 100th anniversary of the 19th Amendment, which secured the right for women to vote in America.

However, this wonder woman “wore her conviction as a badge of honor.”  Susan died in 1906 before the 19th Amendment became law.  Furthermore, the Susan B. Anthony Museum decided to reject the pardon in spirit of her defiance.

Susan B. Anthony Quotes

“Cautious, careful people, always casting about to preserve their reputations… can never effect a reform.”

“Independence is happiness.”

 “No man is good enough to govern any woman without her consent.”

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