Mint Errors

Mint Errors

While the U.S. Mint is very careful to produce all coins within strict quality guidelines, the Mint isn't perfect. Although many different mint errors are known, they can be cleanly broken down into three categories - planchet errors, die errors, and striking errors. Some examples of each are:

Planchet Errors: Any error caused as a direct result of how the planchet was made. These include clipped planchets, tapered planchets, wrong stock errors, wrong planchet errors, sintered planchets, and others.
Die Errors: Any number of errors caused by the die that mints coins. Examples are broken die (or CUD if at the edge of the coin), clashed die, damaged dies, and others.
Striking Errors: A large number of different errors caused directly by the action of striking coins. These include, but are not limited to, off-center struck coins, broadstruck coins, partial collar errors, indents, chain strikes, saddle strikes, ram strikes, and others.

Some errors are very rare and valuable, and others are rather common and have little value. A general set of rules to follow when considering errors and their value:

Older error coins, especially those from the 19th century and early 20th century are generally far scarcer than more modern error coins of the same type and will command substantially higher premium values.
Errors that are very obvious, especially those that are larger than a normal coin of the type, are generally worth more than errors that take concentration to notice or will fit in a normal roll of coins of the type.
The more unusual an error is generally the more premium it will command.

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1955 Jefferson 5C Mint Error Struck on 10C Planchet 2.5 Grams NGC AU55
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SKU: SKU27697

Credit Card Price:$699.00

Wire Discount Price:$681.53

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1958 Jefferson 5C Mint Error Struck on 10C Planchet 2.5 Grams NGC MS65 Mint State 65
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SKU: SKU28042

Credit Card Price:$1,249.00

Wire Discount Price:$1,217.78

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1965 Lincoln 1C Cent Mint Error Struck On A 1965 10C NGC MS65 Mint State 65
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SKU: SKU28041

Credit Card Price:$3,249.00

Wire Discount Price:$3,167.78

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1978-D Washington 25C Mint Error 10% Obverse Misaligned Die NGC MS63 Mint State 63
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SKU: SKU28045

Credit Card Price:$149.00

Wire Discount Price:$145.28

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1980-P Jefferson 5C Mint Error Struck on 1C Planchet 3.09 Grams NGC MS63 RB Mint State 63 Red Brown
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SKU: SKU27698

Credit Card Price:$599.00

Wire Discount Price:$584.03

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1981-P Jefferson 5C Mint Error Overstruck On A 1981 Lincoln 1C NGC MS65 RB Mint State 65 Red Brown
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SKU: SKU27699

Credit Card Price:$1,099.00

Wire Discount Price:$1,071.53

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1983-P Washington 25C Mint Error Overstruck On A Struck Amusement Token NGC MS65 Mint State 65
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SKU: SKU28044

This is a unique piece and you are not likely to find one like it elsewhere. This Washington Quarter has been struck on an amusement token. On the obverse, you can very clearly read "THIS IS MY LUCKY DAY" underneath the Washington design, though it is...

Credit Card Price:$19,999.00

Wire Discount Price:$19,499.03

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1999-W $5 Gold Eagle Mint Error Unfinished PF Dies With "W" NGC MS69 Mint State 69
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SKU: SKU17620

The King of $5 Mint Marked Gold Eagles.

Credit Card Price:$739.00

Wire Discount Price:$720.53

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2000-P New Hampshire 25C Mint Error Struck 50% Off Center NGC MS67 Mint State 67
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SKU: SKU27702

Credit Card Price:$299.00

Wire Discount Price:$291.53

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No Date Jefferson 5C Mint Error 55% Off Center on Curved Clip Planchet NGC MS67 Mint State 67
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SKU: SKU27700

Credit Card Price:$199.00

Wire Discount Price:$194.03

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No Date Jefferson 5C Mint Error 70% Off Center With Obverse Die Break NGC MS66 Mint State 66
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SKU: SKU23804

Credit Card Price:$325.00

Wire Discount Price:$316.88

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No Date Lincoln 1C Cent Off Center Struck On A Philippine 5S Planchet 2.5 Grams Mint Error NGC MS62 Mint State 62
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SKU: SKU28039

A rather unique error. Not only is this coin off center by a large margin, but it's also been struck on a Philippine 5S planchet. At one time, the U.S. minted coins for use in Philippine which explains how the planchet was inside the U.S. Mint facilities.

Credit Card Price:$5,495.00

Wire Discount Price:$5,357.63

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No Date Lincoln 1C Mint Error Obverse Counter Brockage NGC MS65 RD Mint State 65 Red
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SKU: SKU27694

Credit Card Price:$289.00

Wire Discount Price:$281.78

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No Date Lincoln 1C Mint Error Struck 50% Off Center on Struck 10C NGC MS67 Mint State 67
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SKU: SKU28040

This is a really neat error. A Roosevelt Dime had already been struck and then made it's way back into the presses to be struck again by Lincoln cent dies, although off center. The placement of the second strike means that we do not know what the date...

Credit Card Price:$7,495.00

Wire Discount Price:$7,307.63