If it is recessed (and that appears to be the case), then it's a strike-through error. A piece of debris was interposed between the obverse die...
I have no doubt that it is a genuine missing clad error.
This is an "encased cent" (lucky token cent). A normal cent was squeezed to a smaller diameter as a surrounding ring was struck. The pushed-in...
It doesn't look like an error or variety to me. Most likely post-strike damage, although only a close examination can establish that for sure.
Sounds like your coin is missing one of the outer clad layers. Not a particularly rare error, but it's very unusual to find one in pocket change.
It's a fake.
Lamination errors carry little value, especially in a circulated specimen. If you got 25c for it, you'd be doing well. The undersized coin looks...
Is reeding present? If not, then the coin was altered outside the mint. If it is present, then this may be a case of finning of the rim. Under...
I would think it's just contact damage that occurred after the strike. These appear to be reeding impressions, perhaps impressed at a shallow angle.
All dimes have "raised edges", a.k.a. design rims. What distinguishes yours? Unstruck dime planchets are worth a few dollars, nothing more.
It's worth $400 - $500 in today's market. The planchet was probably intended for a Panama 1/10 balboa. These were minted in San Francisco on...
If it's a shadow image, it may be surface film doubling. If the planchet has a molecule-thin coating of oil or other surface contaminant, you can...
Doesn't sound like a minting error.
Severe damage that occurred after the strike. It's not a minting error.
Sounds like a die chip. Very common.
It's not genuine. The surface is covered by tiny bumps, which you'll never find in a genuine unplated cent. Some of these cents have had the...
Looks like post-strike damage.
Due a design flaw, this part of the reverse design often strikes up poorly.
Photos are very poor. You might simply have a dirty and discolored nickel.
Different terminology is used when discussing cladding defects.
Separate names with a comma.