The edge is completely fine and undisturbed,my main thought is just a well placed die chip interesting spot for sure.
Potty.. Remember what you said a few days ago? Something about a Rim Burr The die strikes the area within the raised edge. So not a die chip on the rim.
It could be a very early pre- rim cud, could be a couple nicks on the edge of the coin also. Hard to say. which reverse is that one? I haven't come across one that big yet! Cumberland Island maybe? Voyaguers Harpers Ferry
need a better picture, struck in rim bur maybe? Possibly a bigfoot sighting? Hard to tell from the picture...
maybe less zoomed in when you get a chance. Section circled in red, kind of appears like a "splinter of metal peeled back from the rim still attached and struck into the R? is it raised or indented? less zoomed in might help, but maybe not. no rush, we all have a lifetime bro!