21-S Buffalo....error?

Oh yeah, you're right, I was aware of the variety, but I was so thrown off by what I think MAY be a defective die on the left at 9 o'clock that I forgot to check.

Die chip or lamination error? Two feather variety, makes this one rarer than the already rare key date. Nice find!

It can't be a lamination error, there's no metal missing off of the coin's surface. I don't believe its a " Cud" in a strict sense the way we usually attribute those errors because the area in question wasn't unstruck due to a die break. It looks like the portion of the metal meant to be struck to complete the rim was instead struck over into the field. Like if something got in the way or if the die was defective otherwise.

I don't want to say PMD (partially because I'm really hoping it isn't) only because it would take both a precise and powerful force to move the metal over like that and I can't think of anything that could do that and leave the rest off the coin flawless, at least as far as damage. The edge also just looks "mint-struck", it extends very cleanly from the rim probably even more so in hand than in the pics.

I still am not completely positive about it. More opinions are needed! Anybody?

I may be wrong but I believe it's PMD. Looks like the rim was cut with something, moved, then entered circulation where it received wear, smoothing it down.

I had a Jefferson nickel I found while roll hunting that was similar. At first I thought it was a Cud, but the more I looked at it, the more it looked like some sort of rim damage that had been flattened back into the coin over time or something. Eventually I was able to pry up the displaced metal with a knife edge, proving it was just PMD.

I would be afraid to try that with a '21-S though.

Since I will be trying to sell the coin, what do you think I should say? I believe in earnest that it is a mint error, but I would feel uncomfortable claiming it is in a listing when there isn't a clear consensus. Neither of the two dissenting opinions I've heard so far seam to be positive that it's PMD, so I'm certainly not going to call it that. Then, I would feel stupid selling a semi-rare coin with an even rarer variety attributed and then just not even mentioning that obvious situation going on at 9 o'clock. It would make me seam insincere and could leave me open to a return.

Also, how would you price this guy.

I am providing 3 more pictures of the side of the coin. They don't show much, because the side is essentially clean. I know I'm biased because I really want this to be a mint error, but nobody in the PMD camp has given any explanation for how this could have happened.

How would a coin look this clean and have sustained a hit severe and precise enough to move a part of the metal to another portion of the coin. Try hitting a Jefferson with a hammer. You'll find out pretty quick that an impact tough enough to do any real damage, does just that, damage...to much of the coin. It's just not plausable.

How, then, could said moved piece be fused completely and elegantly to the field. What is this, extraterrestrial technology.

Like I said before, and further supported by the pictures below, there is much more metal in the field than there is missing from the rim....that's what a defective abraded die could do.

I don't really know much about errors involving a collar break. What exactly happens? Also, value wise, is that the kind of thing like a lamination error where large ones increase value, but small ones actually decrease value.