What started in 1970 with a massive MGM auction has turned into a multimillion-dollar global business.
The items at the auction include everything from David Rockefeller’s gold cuff links to Picasso paintings that were once owned by writer Gertrude Stein.
But art critic Blake Gopnik explains why that might not be the right question to ask.
It was created by Walt Disney and fellow illustrator Herb Ryman in just one weekend to woo theme park investors in 1953.
The art world, "where insider trading ... is completely legal and actually frequently practiced."
Sotheby’s Hong Kong is auctioning the world’s largest round blue diamond, the Premier Blue, for $19 million dollars. There’s not much you can do with diamonds but they are always in demand.