I found this Trespass frisbee (now called a "disc") from Dynamic Discs near a disc golf course. Never knew these fun things got this involved. This one's styled as an "overstable driver" with speed (12), glide (5), turn (-0.5), and fade (3) calculated and marked on top. Made in Sweden. It's made of stern stuff and weighs 173 grams. Quite something.