Black "Morgan" Beauty with a little something on her chin

When I first looked at this I was thinking bleach or ammonia, because the coin doesn't look like one that's been through a fire, and black toning doesn't look like that either - but nothing seemed to fit that could explain the raised line. I thought about the coin being cut, a cut of some kind into the die, but nothing really fits the look any of that would have. But the closeups of the raised line, that helped.

If you look at the north end of it you can see that it's kind of flattened out, tapered, almost like it was cut at an angle. And where it meets the tip of the chin you can see where it looks like it was almost broken in half. And further down you can what looks like built up areas of carbon - the kind of thing you do see on something that has been in a fire. And there's even a bright and shiny spot or two - that looks silver looks when it's been heated.

So what happened to this coin ? Well, I dunno for sure but maybe some collector had a workshop in his garage or someplace in his house where he made jewelry. And maybe he had some silver wire there, and a coin or two. And maybe there was a fire, and maybe a piece of silver wire ended up on that coin, got heated enough to stick and it ended up being what we see here.

Silver wire if it got hot enough and was laid across a sharp edge like the tip of the chin could semi-melt and almost break at that point. It could also easily show some carbon buildup, a tapered end where it had been previously cut, and a shiny spot or two. And it would probably bond to the coin.

As for the look of the coin itself, yeah I know I said it doesn't look like one that's been in a fire, and it doesn't. But, it's possible it was, and the rest does fit, at least to my mind. Yeah, I could easy be wrong, but I just don't see any other explanations that fit as well as that scenario.