7 vintage portraits of children sanguine pencil on paper Italy 1980s PB

Subject: children portraits. Medium and painting surface: sanguine pencil on paper (5 pieces), sanguine on cardboard (2 pieces) Artist: bertolino, signed "bert". These drawings are part of a large collection that you can find on our website. Date of creation: dated 1980s. Origin: piedmont, italy. Condition: very good (see the pictures, consider the age) Measures in cm: 40 X 50 cm (2) - 38 X 50 cm (1) - 35 X 50 cm (2) - 30 X 40 cm (2, cardboard) Measures in inches: 15.74" X 19.68" (2) - 14.96" X 19.68 (1) - 13.77" X 19.68" cm (2) - 11.81" X 15.74" (2, cardboard).