Over the past five years, conservators and scientists from the museum, the National Gallery of Art, Cornell University and Delaware's Winterthur Museum have developed a clearer image of the mystery picture under the surface. It's a portrait of an unknown man painted in a vertical composition by one of the 20th century's great artists.
Advances in infrared imagery reveal a man's face resting on his hand with three rings on his fingers. He's dressed in a jacket and bow tie.
