I presume the extra letter is raised (that's what it looks like, anyway). If so, then this is a contact mark, not an error. The edges of dollars...
I would think it's a peculiar form of die deterioration doubling. But you also may have surface film doubling occurring here. That occurs when...
The picture is so dark I can't tell whether it was sandblasted or etched with acid. But it's definitely not a mint error.
Yes, it's a mild case of collar clash.
The thin apron of metal on the reverse represents post-strike damage. A little bit of metal was relocated from the rim to the area just inside...
You've got a slight horizontal misalignment of the obverse (hammer) die, along with a finned rim. The die was slightly tilted down on the right...
It's definitely real. You really have a 1999 cent struck over a 1998 dime? That makes it even better.
That's another possible scenario, but it happens less often than most people think. Think about it. The number of quarters with the core fully...
You can usually see the core as a slightly darker, gray band on the edge of 40% silver halves. Interestingly, if you cut into the core, it shows...
I suppose it could come from any number of sources. In one series of grease-struck cents I assembled and verified on the basis of die markers,...
The reeding is quite strong, so it's not a weak strike. I would venture that it was struck through heavy grease on both faces, heavy enough on...
Cents struck on unplated planchets are difficult to authenticate when you've got them in your hands, let alone from a photo. Here are things to...
Bi-level die cracks do not appear to signal an imminent demise of the die, in the same way that conventional die cracks don't imply an imminent...
Your die crack is transitioning from a conventional die crack on the left to a bi-level die crack on the right. A bi-level die crack features...
It's good to hear from you, Jason. I'm glad you can break away occasionally from shepherding that large brood of children you've collaborated on...
This is an authentic double denomination error, a cent struck over a dime.
It could be discolored, plated, stained, a struck counterfeit, or an improper annealing error ("copper wash", "sintered plating"). It's hard to...
One should always distinguish between the "proto-rim" of the upset planchet and the "design rim" of the finished coin. Both are "rims", but they...
I understand the points you're making completely. But it's not much of a dent and therefore doesn't show a discernible contact facet or...
Are you claimng that the coin is underweight? This wasn't stated in your original description. As to how this coin is dented, and as to why...
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