Nick Dudman signed index cards. Obtained through the mail. Mr. Dudman was a Special Effects Makeup Trainee for Star Wars: Empire Strikes Back, a Makeup artist for Star Wars: Return of the Jed, He was Creature Effects Supervisor for both Star Wars: The Phantom Menace and Star Wars Attack of the Clones. He was Special Makeup Effects Artist for Harry Potter and the Sorcerer's Stone, Harry Potter and the Chamber of Secrets and for Harry Potter and the Prisoner of Azkaban.  I'll consider one of the index cards for sale/trade. Above is an unsigned photo of Mr. Dudman at work.