Undefeated heavyweight boxing champion, he died in a plane crash in 1969. DS, one page, 7.5 x 6, no date. Unissued stock assignment certificate, neatly signed at the bottom in black ink by Marciano. In fine condition, with a bisecting vertical fold, lightly affecting the opening stroke of signature. Auction LOA Steve Grad/PSA/DNA and R&R COA.
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