A San Francisco gallery was stunned to discover that it had unknowingly bought a previously-unseen Gustav Klimt drawing.

The Lost Art Salon, which specializes in the rediscovery of fine art, bought a hoard of unidentifiable works on paper at a Bay Area auction last spring. During the research process, gallery staff discovered a series of drawings signed by Johannes and Maria Fischer, who were close friends of Egon Schiele. This clue led the researchers to believe that other pieces could be associated with other Viennese Secessionists.