Sofa in Leather Non Stop "Ds 600" for De Sede, Switzerland 1970s. De Sede DS-600 “Non-Stop” Sofa in Brown Leather, Switzerland, 1960 De Sede DS-600 “Non- Stop” Sofa (16 segments) DS600 Modular Non Stop Sofa by Ueli Berger for De Sede, Switzerland, 1972 ...