Both pairs of gloves from the May 25, 1965, bout in Lewiston, Maine won by Ali with a first-round knockout from what some saw as a "phantom punch" were seized by George Russo, the boxing commissioner for Maine. The gloves remained in the Russo family until a California collector purchased them several years ago before putting them up for auction yesterday.
Dallas-based Heritage Auctions, which handled the sale in New York City, said the gloves were purchased for USD 956,000 by a buyer who wished to remain anonymous.
Jackson was illiterate and rarely signed anything but paychecks and legal documents, making his autograph among the rarest in sports.
Footage of the Ali-Liston fight does not make it clear whether Ali's quick right hand actually connected, and many fans booed. Even the most famous photos of the fight show an enraged Ali standing over Liston as he lay on the canvas; Ali is gesturing and yelling at Liston to get up and fight.
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Ali signed both pairs of gloves when he came to Lewiston in 1995 to celebrate the fight's 30th anniversary. Liston died in 1970.
How many of Jackson's signatures are in existence today isn't clear, but most experts agree the number is probably less than 100.
Autograph experts from two different authentication companies closely examined the signature on the photo of Jackson and determined it was the real thing, said Heritage Auctions said.
The photo of Jackson that sold Saturday was unknown in the sports memorabilia world until last year.