Ring-shaped recesses located just inside the design rim and caused by compacted die fill ("grease") are fairly common in other denominations, like...
The subequal strength of the rings would remove that diagnostic from consideration. So in this case, you rely on two other diagnostics. One is...
I see no evidence of a crack, either in the die or the planchet. Grease can settle around the outside in the form of a ring because there is a...
An account of the first domestic case of design creep (a run of 2014-P nickels) can be read in this week's Coin World (April 20, 2015).
The ring located just inside the design rim appears sunken. In some areas the internal margin is sharply defined, with a sightly irregular...
Echoing Coop's opinion, the affected portion of the coin was crushed outside the Mint.
Die erosion pits ("blebs"). A manifestation of die deterioration.
The reverse definitely looks like it has a "struck through reeding" error. This reeding usually represents shorn-off fins or bits of metal...
Not a single "coreless" state quarter has been authenticated, to my knowledge. Every one I've examined has been plated outside the Mint. If the...
It would also be helpful to get a digital subscription to Coin World (about $20). With that you get access to the Coin World archives back to...
Spadone's book is dreadful. Full of alterations and counterfeits. The terminology is idiosyncratic and obsolete. Many a novice collector has...
Die chip.
Value would depend on condition. If it's uncirculated it would be worth probably $300 - $400. If the date was certain and complete, it would be...
I have little doubt that this is a genuine nickel struck on a silver dime planchet. As for James Wiles, he only attributes die varieties. He...
That'll be fine. PM me and I'll send you my mailing address.
I'm stumped. I would have to examine the coin under a microscope to have any hope of making progress toward an accurate diagnosis.
You've got two unrelated errors here. The weakness in the design rim is most likely due to inadequate upset of the planchet. The raised...
If it's normal weight (as I suspect) then it's either an improperly annealed planchet or post-strike discoloration. Given the complete absence of...
The "extra bulge" you refer to is presumably what's left of the design rim. It's also possible that some of the metal was moved around during the...
A downward sloping perimeter is a solid indication of alteration.
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