Dark wood frames with glass. Dimensions: 40 cm x 30 cm. Top left: "Little ball in the Engadine Valley" (1971, Filiberto Pittini); top right: "A study of shadows on the steps" (1980-1990, Filiberto Pittini); bottom left: "Glassmaking in Murano" (Fotografia Ferruzzi, 1954); bottom right: "Masks" (1962, Vincenzo Balocch