While the name of the buyer was not disclosed at the Christie's auction house, the medal was priced between 400 and 600 thousand dollars.
The historic 8.9-meter jump, recorded at the Mexico-1968 Olympics, was not broken until the 1991 Tokyo World Athletics Championships.
The record was broken that year in a legendary duel between two American athletes, Mike Powell and Carl Lewis, with Powell winning with a jump of 8.95 cm.
However, the same feat could not be achieved at the Olympics, so Beaumon still holds the long jump record.
In addition to Beaumon's medal, a painting signed by members of the famous British band (1966) sold for 1.74 million dollars.