Set of 4 vintage chairs by Martin Visser for Spectrum, Netherlands 1960s

A set of 4 dining chairs model SE06 designed by Martin Visser in 1967 and manufactured by 't Spectrum in the Netherlands. The chair has a stainless steel tubular frame and a natural leather seat and back. These chairs are from a first edition with a leather strap at the back of the chair, a nice detail that was later removed from the design. The chairs are in very good original condition and the leather has a fantastic patina from age and use.