White Plastic Vicar Armchairs by Vico Magistretti for Artemide, 1971, Set of 2

Pair of vintage white plastic Vicario armchairs designed in 1970 by Vico Magistretti and produced in Italy by Artemide. The armchairs remain in quite good condition: one chair show a visible crack on the leg. General signs of wear as showed in the pictures. One chair show some oxidation spots on the internal side (seat-backrest). This piece has an attribution mark,
I am sure that it is completely authentic and take full responsibility for any authenticity
issues arising from misattribution