Do these look like his signature? Is it a different style or are they secretarial? I would think they should have been witnessed but I do not know about the company?
It is defiantly authentic my friend. Panini is a large card company that produces all sorts of autograph /mateerial cards. On the back of the card it gives you the COA and talks about a panini rep being in person.
I know this is an old thread and I have not heard anything either way on the Panini Jerry Lewis cards but Panini has a string of produced cards that places their ethics into question. As far as I am concerned their COA is worthless. Not that I don't believe most of their releases are authentic, but that they will not do anything about the ones that aren't.