Set of 3 mid century Plia folding chairs by Gianmarco Piretti for Castelli, Italy 1960s

Set of three Plia model folding chairs, designed by Giancarlo Piretti for Castelli in 1960. Chromed steel structure and brown plexiglass seat. The chairs have visible areas of wear on the seats and backs and one of them also has wear on the chrome, although they are in good used condition. Measures: Height 74 cm. Seat height 42 cm. Width 46.5 cm. Depth 50 cm. Folded depth 4.5 cm.