Hello! I'm new on here, so if this subject has been discussed previously, I apologize. I have seen several sellers of magic items selling the David Blaine Joker T-Shirt with the autographed joker card. None of the sellers has a Certificate of Authenticity or David Blaine Limited Edition Certificate that comes with the purchase. Is there anyone that can tell me if they have any knowledge of whether they feel that David actually signed the card that comes with the shirt? If there is, I'd appreciate any feedback that you can give me. Thanks so much!