Originally Posted by JoakimBL
The list of approved discs is pretty useless. Many discs don't have any markings to identify what it is. And how is a TD equipped to identify a worn disc with no markings and maybe a custom dye job? The only kind of illegal disc he can accurately judge is discs with damage, and maybe some kind of modified disc.
I understand the idea of not being able to identify a particular model because stamps have worn off or what have you, but how many non-PDGA approved flying discs are there that could be mistaken for a golf disc?
Besides, most manufacturers have their company name molded into the discs somewhere, so even if the model is indeterminate, at least the manufacturer is identifiable. And how many of these manufacturers have unapproved or disapproved discs on the market? QuestAT, I suppose, with the Turbo Putt (not that that isn't easily identifiable) Any others?
So if the model is in question, there's usually an easy way to verify its manufacturer, and from there I would ask the player to identify the model. I've known plenty of casual recreational players that have no idea what the disc they're throwing is, but I've met very few tournament players who couldn't answer the question "what type of disc is that?" about any disc they owned. At that point, I'd give the benefit of the doubt to the player that the disc he's claiming is a Valkyrie is a Valkyrie, especially if the disc has the name "Innova" molded somewhere on its underside.