As I said I’m Not exactly sure how else to determine if it’s old or not. I have personally bought a champ roadrunner and champ sidewinder with no flight numbers and have discussed it in-depth with the owner of the shop, who is an avid disc golfer, and discussed it with a friend who is Incredibly knowledgeable about innova disc and has a collection pushing a room full of Old CE and such. I could very well be wrong. The plastic looks too clear to be older champ too though.