The 750L stamp was from Italian Schools series in 1992 depicting University of Naples.
University of Naples was founded in 1224 and is organized into 13 faculties. It is the world's oldest state university and one of the oldest academic institutions in continuous operation. The university is named after its founder Frederick II.
The 50L stamp was issued in 1968 commemorating 200 anniversary of death of Canaletto,who was a Venetian painter famous for his landscapes of Venice.The title of the picture is "The Small St.Mark's Place".