So I've checked out Wexler's RPM guide and could not find any reference to anything more than an S/S south or north. My coin is definitely a 3S and I hope the pictures captured it. I've compared it to my other S/S's and it is very different than all of them. Hopefully someone out there sees what I'm seeing.
It looks like there is some machine doubling on the MM and date, but there may be something else going on. If you can ignore the flat machine doubling at the top of the MM, check to see if the other areas match up with anything on variety vista as a RPM