More people are trying to track down art looted by the Nazis during World War II than ever before. And museums and collectors are under greater scrutiny. But “experts have become increasingly pessimistic that much more of it will ever be recovered and restored to its rightful owners. The Germans seized perhaps 600,000 important works from 1933 to 1945. “As many as 100,000 pieces are still estimated to be missing, and some have undoubtedly been destroyed. ‘Obviously, what this is all about is the art world having to pay the price for lack of interest in provenance that they have shown for generations. It’s a good idea to put it on the Internet and make it available, but I don’t think there’s a great deal of follow-up by museums’.”