This wasn't too bad, but was still cringing under a layer of gunk.
I started at #600 and went up to #2500 then polished with Mothers.
Before:
Attachment 148613
Attachment 148614
Attachment 148615
Attachment 148616
Attachment 148617
After:
Attachment 148618
Attachment 148619
Attachment 148620
Attachment 148621
