A banana duct-taped to a wall? That might sell for more than $1 million at an upcoming auction at Sotheby’s in New York.

Walk into any supermarket and you can generally buy a banana for less than $1. But a banana duct-taped to a wall? That might ...

This is a banana duct-taped to the wall. It’s a real banana. You could go into a supermarket, buy such a banana, and tape it to the wall. But the chances are your version won’t go to auction for a ...