Is this an error coin produced by the mint or is the mark at the end of the eagles tail man made damage?
I can't tell from the pics, but is the mark raised up above the surface of the coin, or is it incuse like the coin's design? I'm guessing it's incuse from what I can see in the photos but just wanted to make sure as it may change my answer
The mark is concave not convex... it goes down into the coin. There are some other close up photos at http://bluccphotos.com/clients/tenncollector/10-23-10raw/index.html
If it is a die-gouge I don't think that is will add any additional value, but if it is an error produced at the mint it would make it extremely rare.
That's pretty much why I asked my previous question, if there was a gouge cut on the die, the mark on your coin should be raised up on your coin. Correct? To get something struck down into your coin, there would have to be a lump of metal (or something else) on the die raised up in order to strike through on your coin. So in my opinion it's either post mint damage or a strike through error. Not enough experience to say for sure.
Tough call on that one! I would send it in and have it graded, send it to ANACS. I think they still grade error coins.
Yes, that's right. The feature on this coin is not a die characteristic. It looks like a possible planchet flaw. Perhaps there was a strike-through - something on the flan or the die at moment of strike, maybe a piece of slag or die steel. It's also possible it was a void spot on the planchet, but that's very unusual on these late-date gold coins. It looks mint-made to me, as opposed to major post-mint trauma.
