A print of his best-known ... After four years of art school, Mr. Cattelan must have cycled through countless theories of what a banana is “supposed” to be. Is it a kind of phallic idol?

Shunting aside qualms about an art market slump ... knockoff of sorts as well —“Clown,” a print and watercolor Cattelan made of the banana to raise money for New York’s New Museum.