I can only assume that's a CPR glass. They aren't accurate IMO. Wait till it starts bubbling.

https://pinside.com/pinball/forum/topic/cpr-warranty-in-australia-

OE

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A trick I used with a bgresto glass was using led dual flex and pointing the LEDs at the light panel to diffuse. This eliminates the hot spots and makes it possible to mix in some colored LEDs to bring out the colors in the glass without overwhelming

Marco sells CPR glasses. Coos make a NGS, never had one of their glasses but other people like them:

https://www.coos.net/bingo_e/Backglasses.html

I’d get a translite made before I’d buy a CPR glass. I’ve just seen so many bad ones, like sunburned Captain Picard and magenta Flash Gordon.

I had a NGS with a ruined back glass and gave up the fight and sold the machine . Really hard to find nice original for this one but it really makes the machine if you can get one.

CPR backglasses are total garbage. Their Playfields suck as well. They’re quality control and customer service are both terrible.

What is the technics used for Coos backglass? Is it silk screened ink?