The police recovered the works, including Munch's 1915 watercolor "Blue Dress," though one of the lithographs had sustained an eight-inch scratch.
The show seems aimed less at promoting art appreciation than at drawing attention to the investigative work of the Carabinieri, the country's paramilitary police force, which recovered the works through its cultural heritage protection unit.
Soon, she will switch to red-hot mode, as has happened before, and, by the time she has recovered, the works of man will have been turned to dust.
"We are extremely distressed about the missing painting, and this communication gives us hope for the possibility of recovering the work," said Anne Scher, the spokeswoman.
"He was very reluctant to in any way assail or complain about the treatment he got from anybody in the United States," Mr. Grosz said, explaining why his father never fought to recover the work.
Judy Goffman Cutler, an art dealer who became entangled in a Register hunt for a Norman Rockwell painting, has sued the company twice, contending that it harassed her for years in its zeal to collect a fee for recovering the work.
Deborah Willis, curator of exhibitions at the Smithsonian's Center for African-American Hintory and Culture in Washington, has spent much of her career recovering the work of black photographers and trying to redress widespread ignorance of their accomplishments.
Investigators and the museum are trying new tactics to recover the works, The Associated Press reported.
Recovering the works from that audacious heist seemed to end the mansion's unhappy legacy of losing artwork.
Next month the United States Supreme Court, in deciding whether to hear the case, will determine whether Grosz's heirs have any hope that legal action will help them recover the works from their current owner, the Museum of Modern Art.
