New York art dealer Irving Blum long ago donated most of his collection of Andy Warhol’s pop art depictions of Campbell’s Soup cans to the Museum of Modern Art, but he apparently held back at least one work, from the days before Warhol discovered silkscreening. “‘Small Torn Campbell’s Soup Can (Pepper Pot),’ an early hand-painted work from 1962, will be auctioned at Christie’s sale of postwar and contemporary art in New York on May 9. It is expected to fetch $10 million to $15 million.”