so i removed all the mylar with no problems at all. No insert decal damage at all.
I used a product called "goo gone" I imported some from the U.S.A. and it was well worth it.
you judge for your self.

The playfield has been cleaned but has not been polished yet. I started with baby wipes and then gave it the nifti  & magic erasor treatment.

I was suprised how vibrant the colours are on this playfield.

there is a picture close to the top of this page with the brown on the millions insert, forgot to take a close up.