After the CE and before the Champ stuff you know today. I have some Pro-Line discs like that. It was not as solid as the old CE stuff, but you could still not see through it. Like you can with the current Champ stuff.
More of a current thing. I LOVE the proto "Night Shift" plastic and it's overstable flight. They made Orc's, Destroyers, Boss's, and Xcalibers in this plastic. Got my hands on some Orcs. Now I don't care for my other Orc's! They need to make it an everyday thing and not some thing that is going to be part of their CFR disc program.
Hey! I just solved the problem! I'll tell them I need to buy all new discs in the Night Shift Plastic and so do all my friend$$$$$$$$$$$. Money talks!