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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1996 Quarter Errors, Varieties, and Values

1996 Quarter Errors, Varieties, & Values

1996 Quarter errors and varieties exist!  For instance, observe the doubling displayed behind Washington’s ear noted with an arrow in the image below.   This is a rare quarter worth money!

1996 quarter errors with pictures
Arrow notes the doubling displaying behind Washington's ear on a 1996 Quarter

Furthermore, no other 1996 doubled die quarter listings are available as of yet.  Therefore, if you find one like this, hold on to it!  In other words, it’s an unknown discovery.   These are the types of quarters worth money.

Doubled Die Variety Quarters

Furthermore, according to Wexler’s Coins & Die Varieties, “Because of the manner in which the dies receive doubled images through the hubbing process, it’s important to realize that the doubling seen on doubled dies will appear as raised and rounded. 

1996 quarter error list

Moreover, the secondary images look just like the normal devices on the coin.  In other words, a machine doubled coin will be flat instead of raised, as shown in the image below.

“Furthermore, doubled letters will often show “splits” in the serifs of the letters whenever the letters have serifs.  Additionally, if the letters have squared off corners, then those corners will often show strong “notches.”

1996 quarter errors to look for
Arrows note Strike Doubling on a 1996 Washington quarter

“Moreover, the “spread” refers to the separation between the doubled design.  Most importantly, the spread of the doubling varies and may be very wide or extremely close.”  A magnifying loupe is necessary to see most doubled die coins.

Furthermore, it’s possible for a coin to be a genuine doubled die that displays machine doubling.  Learning the difference can be challenging for new collectors.  For this reason, online coin communities and groups are great for getting more than one opinion.

machine doubled coin
1996 d quarter error list

Observe the die crack that displays between the left wing of the eagle and the letters “E” & “D” of “UNITED.”   The best chance of finding rare 1996 error or variety quarters in flawless condition is to search through  uncirculated original wrapped bank rolls.

washington error quarters to look for
1996 Washington Quarter Dollar Values

Furthermore, examining 1996 U.S. mint sets for errors and varieties ensures a mint state grade proof specimen.  However, quarters don’t have to have any errors or be a variety in order to be valuable.

1996 error quarters

For instance, a 1996 P 25C Washington quarter graded MS60, sold for $6,900.00. Furthermore, a 1996 D 25C Washington quarter dollar graded MS68, sold for $447.00.  Those quarters are valuable because of their pristine condition.

die crack quarter error
Selling Unique Coins Raw

Additionally, the rarest coins bring the highest premium even without being certified & graded.  “It’s free to list coins on usacoinbook.com, and registration is simple.  Choose a business name or something easy to remember as a good username to direct people you want to show your collection to at any time.”

Furthermore, creating an account at collectors.com enables you to “save your searches and organize your discoveries.”   Ebay is another online marketplace people are buying and selling coins.  For instance, check the sold listings to observe what 1996 P Washington Quarter Errors sell for.

Note, “Coin grading and authentication emerged as a solution to rampant counterfeiting and coin doctoring in the collectible coin industry.”

Key Dates are a Big Deal

“The 1982 and 1983 quarters are most famous for below-average appearance and are the Washington quarters you want to check your change for.”  No mint sets were issued during those two years.  Furthermore, quarters of these dates look battered after a short time in circulation. Therefore, finding one in mint state condition will fetch a very nice premium.

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