Stacking chairs in aluminum and birch plywood, Giancarlo PIRETTI - 1960s

10 Stacking chairs by Giancarlo Piretti, manufactured by Castelli in Italy, 1960s. Polished aluminium frame, the legs are coated in grey plastic. The seat and backrest are made from bent beech plywood which has been stripped of the original upholstery and sanded. All chairs are in a good vintage condition. One chair has a chip on the grey plastic coating of the legs (see picture).