Both dimes in this thread were damaged outside the Mint. The first dime's perimeter was crushed while the second dime has its perimeter ground down.
The dent is from one side of the wrench-shaped feeder/ejector. http://www.error-ref.com/?s=impingement I have photos of a double-struck 2004...
This is die deterioration. The term you were thinking of is "grease-mediated radial smear". Here's an example:...
The cent has a rim cud. The nickel shows post-strike damage.
Acid damage. I've seen many examples of the years. The "oreo cookie" edge with "scalloped" reeding is characteristic of this type of damage.
The 1945 cent shows a form of die damage found in cents from 1917 - 1945. These are usually bilateral and take the form of dents, areas of...
Die scrapes, possibly from a feeder.
These might be roller marks, but the coin is in such bad condition that I can't rule out environmental staining.
The weight is spot-on for a quarter struck on dime stock. This is a rare date for such an error, so hold onto it.
They are unusual looking, but the size and resolution of your photos is inadequate to make a diagnosis. Usually solid corrosion domes are...
My article on this half dollar, and other coins afflicted with the same pattern of smear, can now be found in the latest online edition of Coin...
A radial pattern of doubling/smearing is inconsistent with machine doubling. Perhaps the entire effect is related to the presence of grease....
Interesting effect. The letter B is smeared north-to-south and south-to-north. This may be true of the E as well, although the primary direction...
Thanks. I've sent you an e-mail.
It was struck through a detached clad layer.
This is an intentional alteration -- a "Texas cent". For some reason, these usually have the copper plating stripped off.
That's up to BJ Neff. He's the gatekeeper of the site.
A clash followed by overzealous intentional die abrasion, the combination of the two wreaking havoc on Kennedy's nose. The coin received a...
The grit could scratch the die, independent of the feeder (or ejector or whatever moving part is involved). It would not produce an interior die...
It's hard to determine the direction of a struck-through progression. It requires the presence of a growing set of die markers.
Separate names with a comma.
