Looks ok to me? I think its just the way he took the photo look at the eagles head if it were incuse the edge would have a shadow but you can clearly see the light exposing the raised edge of the head?
No, but some are. They were minted that way. I doubt it's that they didn't see it, but that you didn't ask (and pay for) variety attribution.
I don't see a silver plug on the OP coin, or at least the photo isn't good enough to show it. I was thinking he was referring to the raised dot near the top of the eagles right wing just about where it joins the body. That is a center dot created by a compass they used for making scribe lines, or layout lines on the surface of the die to help in placement of the lettering.
NGC #4061099-005. I can see it with my naked eyes; it's a hole with a plug. A dealer pointed it out to me. I did alert NGC, but it came back O-104.
Then they don't think your coin is the plugged variety, which I believe is O-128. There are only 2 that have been certified. http://old.stacksbowers.com/NewsMed...er-2015-Baltimore-Rarities-Night-Auction.aspx
If you're referring to the dot, have a look at some other examples of O-104. You'll then understand why Conder posted what he did, and why NGC said nothing about it.
Yeah probably the more correct answer, its hard to see with that photo though and my thoughts went to the plug because it literally is a whole in the center lol....