The gloves of boxing legend Muhammad Ali and a jockstrap worn by Joe Frazier in their 1971 fight, billed as the "Fight of the Century" at the time, hit the auction block a month after Ali's death.
Frazier's jockstrap, which had already met its minimum bid of $5,000, is expected to sell for $10,000.
Ali's gloves, meanwhile, are expected to fetch more than $1 million.
Frazier and Ali were both undefeated when they faced of in New York, but Frazier ultimately won their first bout via a unanimous decision.
They met again in 1974, a non-title boxing match called "Super Fight II," and again in 1975 in "Thrilla in Manila."
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