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.
The flat marginal shelving indicates this is machine doubling (push doubling subtype).
There's a remote chance he will luck out with his submission. I've seen some surprisingly crude counterfeits and alterations in PCGS and NGC...
I see no indication that this coin was struck out-of-collar. In other words, this is an alteration of a normal coin rather than an "enhanced error".
If this is nickel scrap then it's still not much of an error. This scrap or "chopped webbing" is sent out to be recycled. There is little or no...
The reverse face was struck by a counterfeit die of relatively soft metal. The soft, blended overlap between primary and secondary elements is...
I'd call it freestanding interior die break. Nice find.
Doubtful, but possible. Blind-ended die cracks are rather common and they never seem to lead to anything more serious. The 2001-P dime shows a...
It's a blind-ended, bi-level die crack.
Die deterioration compounded by wear. Also a very minor misalignment.
When I see a coin like that, I get sprung (apologies to Sir Mix-A-Lot).
I think this is the same coin.
Yeah, that's the one I was thinking of.
There's at least one other 1964 nickel with a struck-in spring, which makes me suspect there was human assistance.
Paddyman98 is quite correct in his diagnosis. You've got a "disc clip" and associated disruption of reeding from the Blakesley effect at the...
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