Sought-after vintage ballpoint signature, "Sonny Liston,” on an off-white 3.5 x 6 card featuring his image and promoting him as "World Heavyweight Champion." Liston reigned as world champ from the time he knocked out Floyd Patterson 1962 until he was defeated by Cassius Clay in 1964. In fine condition. Encapsulated in a PSA/DNA authentication holder.
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