Backglass
The backglass image has some crazing and peeling. There is a strange line in one of the Player 3 digits.
A previous owner has "repaired" the the back of the artwork by painting it with varnish, gluing a few pieces of flaky art incorrectly, and leaving gaps and the odd streak in the score reel windows.
The dammage to the artwork comes from the years of heat from the light bulbs. The varnish means little more can be done.
It is beautiful as it is, and the marks speak to it's long life of giving pleasure.