This is the only one known of this contact sheet of the Muhammad Ali vs. Oscar Bonavena weigh-in from 1970. This Type I photograph was created by the photographer himself and stamped on the verso, and presents a fascinating multi-image of Muhammad and "Ringo" Bonavena joined by such luminaries as Jesse Jackson and of course Bundini Brown. Contact sheets are a hot collectible category unto themselves, as they are used by photographers to choose the best images for reproduction.