Oversized poster depicts a 12-year old Cassius Clay posing in boxing shorts shortly after taking up the sport. Clay was introduced to boxing by policeman and boxing trainer Joe Martin in 1954 after Clay, who was irate at having his bicycle stolen, had gone to the local police station and vowed to “whup” whoever was responsible for the theft. Signed Muhammad Ali AKA Cassius Clay in 8.5/10 strength black marker; measures 26x66" overall. Comes with PSA LOA.