A collector's quality machine should be one that is at LEAST 90% original parts including the PF. Original parts may have come from another machine and made to Collector Quality, that's fine. But the PF should be the machines original PF. It should be in immaculate/pristine condition. BETTER than when it came off the factory floor.
The term CQ is way over used IMO. I equate this rating based on the way we rate vehicles. I think it applies perfectly. Sure, these are worth millions of dollars, but they still have excellent value and most of all, family fun.
For me, I would grade a machine in basically these categories:
Excellent / Near Mint.
POS. J/K. I wanted to make ya laugh!
So, who agrees?