No offense taken. However, the OP reports that the affected area is raised relative to the surrounding normal design. That, plus the fact we can...
As others have said, it's glue. The reverse of another cent was once glued to the obverse face.
You can usually pick these up on eBay for $75 or so.
Yes, it's worthwhile. While generic capped die strikes are common and generally fetch only about $5, the as-yet unexplained doubling enhances...
It would not be surprising if the field-restricted struck-through error coincided with die scrapes travelling in the same direction. That's the...
Yes it would, and it does produce identical errors. The gritty paste clings to the die face and remains intact through several strikes at least....
Struck through a late-stage die cap. These are sometimes associated with peculiar forms of doubling
It's a "field-restricted struck-through" error. A gritty paste was smeared across the field portion of the die face, probably by a dirty feeder....
Specific die varieties and die errors typically end up in particular parts of the country. That was the case with the 1982 "no-P" dime.
If the diameter of the copper Barber dime is greater than the diameter of the normal silver dime, then the coin is almost certainly a counterfeit....
The 1998-P dime struck on "cent stock" has been incorrectly described by PCGS. Several such dimes are known and they were all struck on cut-down...
Again, any number of other dies show curved and straight die dents that were inflicted when the dies were soft and, as a result, the impacts...
There is no conclusive, or even persuasive evidence, that these are intentional die gouges or die dents. That's merely one possibility. There...
Keep in mind that these are not really "extra leaves" and there's no consensus over whether these represent intentional die alterations or...
Regardless of how it came to be, I find it fascinating. While the chance that it was an accident is remote, it's not zero. Case in point is the...
Both of these cents are grease strikes. The strong design rim is unmistakable evidence of this. By the way, the term "die adjustment strike"...
Mules consisting of every conceivable combination of 1 sen and 10 sen dies were intentionally produced in the Malaysian Mint in 2005. See this...
Attacked by acid. Not an error. The perfect centering and blurred surface details are characteristic. You'll also find that the coin's diameter...
http://editions.amospublishing.com/wdcn/default.aspx?d=20130415&pagenum=65&s=Pure%20copper%20quarter
It's a common-date counterfeit, meant to circulate. These are generally composed of copper which is then plated with a thin layer of white metal.
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