I was very involved in disc golf in Florida in the early 90's. Kenny and Nick Sartori ( Flying Eye ) were acquaintances of mine. Was able to collect these before I stopped playing. The 1x and 2x were signed back then. I caught up with Kenny a few years ago and had him sign the rest. You can see the difference in signature over the 20 years. Unfortunately, some of them do have some road rash as my young son found some of the stash and took them outside. He even left the 5x outside for a few weeks. That's why the top is faded as compared to the bottom.
1x Roc- Orange with silver stamp. 180g. Never Thrown
2x Whippet- White with silver stamp. 173g. Two small scrapes on rim
3x Aviar- Orange with silver stamp. 175g. Some minor scrapes on edge
4x Roc- Flying Eye- Yellow with blue stamp. 179g. One long scrape on rim
4x Cobra- White with multicolor "prism" stamp. 174g. Never thrown
5x Cobra- Flying Eye- Red with white band and and "prism" V. 180g. Has quite a bit of road rash.
Link to the pics
http://s880.photobucket.com/user/SuperDaveAPK/library/Golf%20Discs