The jacket worn by American astronaut Edwin "Buzz" Aldrin on his way to the first moon landing on July 20, 1969 has been named the most valuable space-herd collectible as of Tuesday.

At auction, the white outfit sold to an unknown bidder for nearly $2.8 million, beating even Sotheby's estimates.

It had expected proceeds of between one and two million dollars.

A jacket and a pen

Aldrin became the second person, after Neil Armstrong, to set foot on the moon on the Apollo 11 mission.

In addition to the jacket bearing his name, the American flag and the insignia of the historic moon landing, the ninety-two-year-old auctioned off a pen in New York that he had used to replace a broken circuit breaker before returning to Earth.

After leaving the American space agency (Nasa) in 1971, Aldrin made headlines mainly with excess alcohol and family quarrels.

But in the summer of 2019, a few weeks before the 50th anniversary of the moon landing, the astronaut legend decided to settle the lawsuits against his children.