What did it rub against to make those micro-scratches and what are those
rings around the screws on the head? It looks like a different head was put
on that body as the body looks clean and the head is not.

Must have been wiped with paper towels. Damn scratchy paper.

Those micro scratches are just that.....very small and not noticeable under
normal conditions....I shot that photo in the macro mode...very close up....and
the screw heads are all original......and everything is original......