This Sept. 22, 2014 photo made available by Professor Jonathan Petropolous shows Camille Pissarro's 1897 Impressionist masterpiece, "Rue Saint-Honoré, dans l'après-midi. Effet de pluie," durin)... more 
This Sept. 22, 2014 photo made available by Professor Jonathan Petropolous shows Camille Pissarro's 1897 Impressionist masterpiece, "Rue Saint-Honoré, dans l'après-midi. Effet de pluie," during an examination at the Museo Thyssen-Bornemisza in Madrid. In the 16-year battle over this priceless painting looted by the Nazis, there is one point on which all sides agree: When Lilly Cassirer and her husband fled Germany ahead of the Holocaust in 1939, the Jewish couple had to surrender their masterpiece in exchange for their lives. What they disagree on is who owns the painting now. Are the owners the descendants of Cassirer or the Spanish museum that acquired the painting decades ago in good faith. On Monday, Dec. 5, 2016, the case will be argued in a federal appeals court. (Jonathan Petropolous via AP) less 
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Associated Press
Sat, Dec 3, 2016 2:54 PM EST