Planchet, Strike-Through, or Post-Strike?

[seattleMD]

I can't tell whether this is the result of:

A. A gouge in the planchet.
B. A strike-through.
C. Post-mint damage.

http://crhfinds.blogspot.com/2008/06/1997d-jn-pre-or-post-dmg.html

[diamond]

It's a strike-through error, specifically struck through a rim burr. That's a spur of metal that's torn up from the planchet at some point before the strike.

[seattleMD]

Mike,

Thanks for the reply. If you don't mind, can you explain in detail how you came to the decision and what exactly a "rim burr" is?

[diamond]

The shape of the indentation is identical to dozens of other rim burrs I've inspected. In your oblique shots I can see the intact base of the rim burr, the point where the rim burr broke off, and damage to the edge that usually accompanies a rim burr.

I've already explained what a rim burr is in my previous post.

[seattleMD]

Gotcha - thanks again Mike.