This is a longshot but...
Reddish orange CE Teebird, been with me many years.
I used it for my tee shot. I marked my lie and then proceeded to leave it lying there
I realized it was gone on hole 10. I ran over to grab it when we were on 11 but it was gone. No groups were behind us. Maybe a random walker picked it up. All it has on it is my PDGA number.
If anyone comes across this disc a kind reward will come your way. Thanks