Sotheby's is putting some rare items up for auction, including what it calls the largest piece of Mars ever found on Earth.

Sotheby's says the nearly complete fossilized remains of a stegosaurus have sold for $44.6 million at a New York auction.

The nearly complete fossilized remains of a 161-million-year-old stegosaurus discovered in Colorado in 2022 will be auctioned by Sotheby’s in New York next week.

The fossilized skeletons of an aerial predator with a 20-foot wingspan and an aquatic reptile with a snake-like neck will be auctioned in New York this month.

A Tyrannosaurus rex skull is expected to sell for $15 million or more at auction in New York next month.

The fossilized skeleton of a T.

and Tupac Shakur are being united for an auction at Sothebys, the first-ever dedicated hip-hop auction at a major international auction house. Bidders will be able to vie for the crown worn and signed by the Notorious B.I.G. They'll also get to bid on an archive of 22 autographed love letters written by Shakur at the age of 15-17 to a high school sweetheart. Onetime friends who became rivals in a hype-fueled war between the East and West Coast rap scenes, Shakur and the Notorious B.I.G. The crown has been in photographer Barron Claiborne's possession since he captured Biggie for the cover of Rap Pages magazine.