Pair of UPO plastic chairs by Eero Aarnio 1979

Pair of stackable plastic chairs by Eero Aarnio (famous designer of the "ball chair" and "pastill chair") for upo (Finland) in 1979. Made entirely of molded plastic, they were sold as a kit to assemble yourself. They are in very good vintage condition, with traces of use and time (slightly yellowed plastic), small scratches and various stains. Very beautiful general patina, without real defects. Manufacturer's mark under the seats, these were manufactured in 1981. Seat height +-45cm. The price is for the pair (a third chair with a slot on the seat will be attached, for spare parts, repair or decorative use)!.