Ask to see the invoice from CJ that came with the fender. That will tell you what they are. Either he or CJ will have some record of the sale. If he says he doesn't have it, ask him to call CJ for a copy. They do keep sales records there. How far back, I don't know though. I for one keep all the receipts/invoices for parts that I purchased during the restoration of my 65 convertible, but that's just me.I guess to better explain my situation.
A guy has some used fenders for sale. I have spoke to him on the phone and he is telling me that they are ford tooling fenders he bought from CJ Pony. The fenders have been painted and previously installed on his car. He has now decided to remove them and install a fiberglass front on his car. Is there a good way to confirm that they are ford tooling fenders? He is located about 150 miles from me. I would like to think that most people are honest, but I don't want to get stuck with used repo fenders either.