Set of 6 Scandinavian chairs by Fritz Hansen 1960

Set of 6 Scandinavian chairs by Arne Jacobsen for Fritz Hansen model 3103 Hammer. Three chairs are older with their central metal logo, the other three chairs are from 1967 (one chair has cracks on the rounded back, making it more fragile but still usable; the other chairs are in good condition with signs of use and period patina; the legs are metal covered with their original plastic sheath).