Muhammad Ali auction Muhammad Ali’s “Rumble in the Jungle” championship belt and a letter confirming his conversion to Islam are among items to be auctioned on September 10, in the biggest such sale since Ali’s death in June 1962: Cassius Clay signed photograph $10,000 (estimate) 1964: Cassius Clay letter explaining his conversion to Islam $100,000 1981: Last mouth guard ever worn by Ali, from Trevor Berbick fight $8,000 1975: Ali fight-worn shoes from Chuck Wepner bout $20,000 1974: Muhammad Ali WBC Heavyweight Championship belt earned in victory over George Foreman in “Rumble in the Jungle” $600,000 1974: “Rumble in the Jungle” ticket (and programme) $6,000 1964: Sonny Liston’s fight-worn gloves from bout he lost to Cassius Clay – who became Heavyweight Champion $100,000 Sources: Heritage Auctions, wire agencies Pictures: Heritage Auctions