Israeli Art Expert Says Nazi-looted Trove in Munich Is 'Just the Tip of the Iceberg'

German media estimates value of discovered works by Picasso, Matisse, Chagall and others at $1.4 billion.

A few days after the announcement that an artistic treasure trove had been discovered hidden in an apartment in Germany, the Jewish world and the art world are following the story with great excitement, gleaning every new morsel of information on the subject. Tel Aviv-based attorney Joel Levi, an expert at the restitution of works of art stolen from the Jews by the Nazis during World War...