If the weight is normal, then it's a "struck-through" error, probably a "grease strike".
Looks like post-strike damage to me.
I'm not sure what it is. The poor photo doesn't help. It could be a die chip, but this is not a common location for one to form. A bubble in...
Same thing. Machine doubling.
It's machine doubling (a.k.a. mechanical doubling, machine damage doubling, machine doubling damage, strike doubling, shift doubling, ejection...
<<Wow, that's fascinating, thanks! Let me see if I can't put this in my own words. You're saying the raised lines north and south of the "island"...
Conder101 is correct. You've got a die crack that is straddled by a retained interior die break. The latter occurs when and island of metal...
If one side is the normal color and the other side a copper color, then it's probably missing a clad layer. A Montana quarter with this error...
The ring test or drop test is not that diagnostic. It varies from coin to coin. Drop a large sample of war nickels and you'll see what I mean....
It appears to be an example of minor strike doubling (machine doubling).
The normal weight for a clad dime is 2.27 grams. There are no authenticated normal diameter, full weight, solid copper or copper-alloy dimes....
The reeding will still be there. The acid eats away at the ridges and grooves with equal gusto. However, the reeding will appear abnormal and...
The acid (or whatever corrosive liquid was used) eats away at all parts of the coin, including the edge. That's why the diameter is smaller than...
None of these are errors. The quarter and nickel were immersed and partly dissolved in a corrosive chemical. The dime was subjected to high...
There's no error here. The "D/S mintmark" is simply a case of subsurface corrosion pushing up the overlying copper plating. Copper plating...
Starburst is entirely different. It's not a strike-through error or a lamination error. Opinions differ as to its cause, but I believe it's most...
A lamination error implies that some of the metal has peeled up. A strike-through error is when the coin is struck through foreign matter. This...
It's struck through obstructing matter. Probably hardenened, cooked lubricant or a mixture of grease and metal dust. These are often called...
What does it weigh?
Probably a die chip, but the coin's poor condition prevents a definiitive diagnosis.
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