It appears to have been immersed in acid or some other corrosive liquid. It's not an error.
The nickel was altered outside the Mint. Exactly how, I'm not sure. But its appearance is incompatible with any known error. I'm not sure...
I received the quarter and I'm afraid the news will come as an anti-climax. The serrated impression is incuse, not raised. So it's not a die...
"Collar" refers to the retaining ring that establishes the final diameter of a struck coin. In the case of this quarter, the collar was not fully...
Even better, it looks like a misaligned die clash.
It's a clash mark. Clash marks are incuse.
Yes, it's die deterioration doubling.
One possiblity is that this is a piece of a broach. A broach is a ridged cylinder that, according to Arnie Margolis, is forced into an unfinished...
Actually, I may have been mistaken regarding the identity of the foreign object. Notice that the reeds on a quarter consist of relatively broad...
It's not machine doubling. It appears to be a form of die deterioration doubling that commonly develops on zinc cents, especially around the date...
Great find. This appears to be die dent from a fragment of a broken collar. Naturally, this will appear raised on the coin. This is the second...
This is not a "filled die" error. Were that the case, the mintmark would be faint. Instead, this is either a case of die deterioration, a...
This coin appears to have been altered outside the Mint. How about a photo of the entire obverse and reverse face?
It does appear to be a genuine, in-collar, flipover double strike. As a bonus, you have nice preservation of the first strike the form of a...
Website Devoted to Radical Misaligned Die Clashes Unveiled A new website devoted to radically misaligned die clashes is up and running....
I strongly suspect this is post-strike damage. The affected letters look puffy or flattened. The pattern of distortion is like nothing I've seen...
That's my understanding.
I suppose that the plating is fragile and would be disrupted during the upsetting process.
The planchet is plated after going through the upset mill. So a planchet that breaks apart after being struck will show exposed zinc. So will a...
Yes, those are also disturbing features.
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