Set of 4 vintage S33 Cantilever Chairs for Thonet in black leather 1980s

The S33 cantilever chair was designed by the Dutch designer Mart Stam in 1926. It was used for the "Weissenhofsiedlung" project in Stuttgart in 1927. Thonet first produced the chair in 1932. This set of chairs was produced in the early 1980s. These chairs are in good condition. Normal signs of use and age. Marked underneath the seats.