This is a Danny Masterson, Laura Prepon, Mila Kunis and Wilmer Valderrama signed 'That 70's Show' 8x10 photograph depicting the 70s show cast as the cast of Star Wars: A New Hope. Danny Masterson Laura Prepon, Mila Kunis and Wilmer Valderrama autographed the 8x10 photo in blue sharpie. This 8x10 photo has been examined and authenticated by Beckett Authentication Services (BAS), and has been deemed authentic. The Beckett Certificate number is A58667.