I'm looking at a double rim or false rim and maybe and old finned rim that was smoothed out over so much time that makes it look like a cud.
The double line on that area is called a collar clash. The raised area is a rim cud coming from a break in the collar making the rim cud.
I believe a collar clash is the term used only on reeded coins such as dimes. This is a slight MAD. This is a double rim. Finning, and a horizontal misalignment can all be present as part of the same compound error.
A nice find, but I think paddyman98 is correct. It is a double rim, but I don't think you can call it a collar clash.