Lot of 4 folding garden chairs or bistro with wooden slats 1920

Set of 4 old Bistro chairs or public garden of the 1920s. Design of the famous "simplex" whose patent dates from 1889. Steel structure, seats and backs in riveted beech slats. Reinforced frame with a cross and arched flat iron. Hot stamped stamp on the backs of the files. Very solid, stable and in good condition. The wooden slats have been repainted and varnished. The structures are in their juices. Traces of time and usage, see photos. Easy to fold, carry and store.