Set of 4 cast aluminum and plastic chairs model Tonia de Bontempi - Italy, stamped

Here is a set of 4 chairs model tonia from the italian manufacturer bontempi casa. The chassis is made of cast aluminum. The backrest and seat are executed in other very hard and heavy plastic materials. The seat is white the backrest is ivory color. Together in very good condition, no scratches, slight traces of uses at the level of the aluminum structure. Dimensions: height: 85 cm, width: 42 cm, depth: 48 cm. Weight: 5 kg X 4: 20 kg.