CPR no longer grades their playfields. The explanation is the grading isn’t relevant due to the digital registration of the prints being 100% accurate henceforth, so there will be no more “gold, silver, bronze” tiers.
That said, the Cheetah playfield I got from them recently also has a couple of these pinholes in the clear. I’m going to have them fixed by Keith Holbrook from Total Pinball Restorations when I go pick up my Big Game playfield. No idea when that will happen but if I remember by the time that comes, I’ll post what route he takes to fix them. He said it could be done while I’m there, so it must not be too intense.