Heavyweight boxing champion of the world, 1962–1964. Rare vintage ballpoint signature, “Sonny Liston,” on an off-white lined slip. Matted with a glossy 8 x 10 photo of Liston in training, to an overall size of 11 x 14. In fine condition, with diagonal crease through portion of last name and a couple other light creases. COA Steve Grad/PSA/DNA and R&R COA.
