Vintage set of 4 cantilever chairs with cognac saddle leather

Vintage set of four cantilever chairs. The chairs have a cognac-colored leather seat and a chrome tubular frame. The design is derived from the S33 chair by Mart Stam. The condition is reasonable, the chairs have been used and that is sure to see on the leather, these have clear signs of use, constructive the chairs are good, see further details. The dimensions are 59 cm wide, 46 cm height and 79.5 cm high.