It's a case of progressive, indirect design transfer -- a form of die deterioration. It's common on very thin coins like silver 3c pieces. It's...
That little metal tag would appear to be a small rim cud. In other words, a small piece broke off the rim gutter of the reverse die.
I agree. Subsurface corrosion.
There's no question that this is an authentic filled die error, a.k.a., struck through grease. They get a lot more severe than this. Some have...
Looks like a minor off-center strike. The rough surface could be from blistered plating.
It's a tilted partial collar. The collar was not fully deployed when the coin was struck. It's worth $2 - $5.
That description pretty much establishes it as a fake. A steel cent would not "flop" in response to a magnet. It would slam into it with great...
It's probably just stained. I run into copper-colored nickels, dimes, and quarters all the time. Scrape the edge against a fine sharpening stone...
Blowtorch job. The coin was subjected to a tightly focused source of intense heat, which caused gas expansion. I see these alterations all the time.
Is it attracted to a magnet as strongly as a 1943 steel cent? Possibilities include a genuine steel cent struck on a slightly thick planchet, a...
I don't see a raised area, just an area that's been flattened, roughed up, and distorted by some sort of impact or compressive force.
Yes, it was damaged outside the Mint. There is no cud.
The 1955 cent shows die deterioration doubling ("poorman's doubled die"). The 1935 cent is covered with glue. The 1919 and 1939 cents show...
It was dissolved in acid and then subsequently circulated.
Classic machine doubling. The marginal shelving is unmistakeable.
It's machine doubling. The marginal shelving is characteristic. This is a common area to see machine doubling on Washington quarters.
Your photo is too poor to make any sort of determination.
About $10 - $15.
The fact that copper is exposed along the perimeter suggests the coin is plated.
It's a capped die strike. The coin was struck through a late-stage die cap.
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