This is the body of Blessed Ildefonso Schuster, the Cardinal - Archbishop of Milan during World War II, after his body was exhumed in preparation for his beatification on January 28, 1985. Schuster was beatified on May 12, 1996 by Pope John Paul II.
Now his body is displayed at the Duomo. His face is covered with a silver mask as an Italian tradition.
For other photos of other incorrupt bodies of saints, click here.