to have been looted by the nazis. they say they've discovered a previously unknown painting by shagal. the prosecutors put photos of the collection on display. they say they've recovered more than 12 1,400 pieces including works by pablo picasso. the shegal is part of a series painted in the mid 1920s. >> of course it is of a very high value for art historians. and all these paintings and prints are in a very good condition. >> tax authorities stumbled on the collection in february of last year. they found the paintings in a man's apartment in munich. he's 79 years old. the works are believed to have been collected by the man's father who was an art dealer with ties to the nazi party. a german magazine reported earlier this week the collection