4 black Vertebra chairs

Castelli/ peretti/ambasz chair quartet. Green-grey grey wool coating. Black structure. Stackable. Adjustable online. Fabric in very good condition. 5 chairs available. Qq scratches on the structure, due to use, but not significant. Completely neutered. The vertebra chair was designed by emilio ambasz and giancarlo piretti for anonima castelli in 1976. A rare example of an ergonomic solution for seats. The first automatically adjustable office chair, designed to respond and adapt to the user's body movements. The vertebra system slides the seat and tilts the back of the chair at the touch of the back providing maximum comfort. 1977 id award for excellence of design. 1979 smau industrial design award. 1981 compasso d'oro award. Very beautiful blue-petrol chairs, they can be used as office or dining chairs, in a vintage, classic or modern space. Very good condition, traces of use, some small discrete marks...