Does my family own a painting looted by Nazis?

For decades, it hung near the dining room inside a family home: a genre painting by a Dutch old master depicting an old man and his wife weighing and counting their gold coins. Judged a genuine work by Jan Steen and dated to the 1660s, it was once valued at $400,000.

But now, the work is almost impossible to sell — rejected by Sotheby’s, by Christie’s and by a renowned Dutch art dealer who were all put off, not by its authenticity, but its history.