Proof planchets have a slightly dimpled surface from the steel pellets they're tumbled with.
Several off-center business strikes on proof planchets are known.
It could be an error. But you need to post a decent photo.
This is a commonly encountered alteration. Although the wire brush scenario has been floated for years, there are never any scratches or...
While it may be a "grease strike" it might just as easily be a failure to strike up properly. This part of the reverse design lies opposite the...
Someone monkeyed with it outside the mint. It's not an error.
Collar clash. The hammer (obverse) die collided with the top of the collar and/or scraped along its working face.
I'd say it'll end up in the $350 range.
I would say it's probably a strike-through error of some kind, but I can't rule out a defective planchet. A close-up look through a microscope...
Agreed. Die deterioration.
Post-strike damage.
Strike doubling, along with a misalignment of the obverse die. Misalignments and strike doubling often go together, since some misalignments are...
It could be a Rockwell test mark. Dies are tested for hardness as part of the quality control process. The marked die is supposed to be...
Both quarters are squeeze jobs. The same individual is also selling a fake double-struck 1999 cent, with the second strike administered by a fake...
Late-stage capped die strikes are worth less than early-stage. An early-stage capped die strike might show a brockage, a counterbrockage, a...
The top coin looks like a strike-through error. The bottom coin is a "lucky token" cent (encased cent). It is not an error.
The obverse was struck through a very late-stage die cap. The edge shows a partial collar error.
Damaged outside the mint.
As best as I can tell from the photo, it looks like an authentic cracked planchet error to me.
It's a lamination crack. The metal is cracking and peeling due to impurities in the alloy. This is extremely common.
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