I think a tuneup and refinish would serve these well.....an x-metal finish hides alot of defects...... I'm wondering if that was the original plan all along, because the early casting processes were rough.
I was unsure if that light press ring around the nostril could be repaired or hidden short of painting
You’ve sorted a couple nostril smudges for me one way or the other (that I did not put there I might add