It's a die break, specifically a "cud". The outer margin of the die broke off, leaving a raised blemish on the coin.
The nickel is a cupped off-center strike. You can alternatively describe it as an off-center strike combined with a stiff collar error. The...
It's more off-center than most. I'd guess it'd bring at least $50 on eBay.
I haven't heard of a clamp being using, but I suppose it's possible. I've seen several cases of incuse roller lines (at least I presume they're...
Nice example of the kind of streaks I wrote about.
Just the writer (me).
In my opinion, these are not improper alloy mix errors. I strongly suspect they are roller marks. See this article for more information:...
It could also conceivably be a Panama half balboa planchet. These were minted on the same silver-clad planchets that the half dollars of previous...
It's not an error and it's not post-strike damage. The planchet was strongly upset and there was a well-developed bevel connecting the apex of...
Maybe 25c.
This is not grease-mold doubling. The extra hairline above Lincoln's head is an example of split plating doubling. The doubling of the 9 and...
Off-center with an "indent" (indentation from a planchet).
If the ring is incuse and affects both the field and design, it's a scratch from a crimper on a coin-wrapping machine.
Excessive weight in a copper-plated zinc cent could be due to rolled-thick zinc stock or excessively thick copper plating.
This is not a lamination error. As I said, this is a brockage from a struck fragment. This is a well-known error type.
It is an incuse, mirror-image version of Abe Lincoln's head. Which is what you'd expect of such an error.
If the feature is recessed (and it appears to be) then this is a brockage from a struck fragment. An irregular piece of metal was die-struck on...
From the abrupt termination, I suspect you're looking at a chipped working hub. This rare hub defect, in combination with a 180 degree rotated...
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