4867 chair set by Joe Colombo for Kartell from 1979. High-quality injection-molded red polycarbonate frame. The set includes five stackable chairs. Quality features: Excellent craftsmanship High-quality materials Made in Italy. Design: Joe Colombo, Manufacturer: Kartell (branding under the seat) 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