Muhammad Ali's "Rumble in the Jungle" belt sold - for 63 million

The buyer is Jim Irsay, owner of the NFL team Indianapolis Colts.

Irsay writes on Twitter that he bought the belt for his collection of rock music, American history and pop culture.

In the heavyweight match in African Zaire (now Congo-Kinshasa) in 1974, Ali regained the champion title from George Foreman.

Ali knocked out Foreman in the eighth round.