Designed and crafted by De Sede in Switzerland, this dynamic lounge sofa and 2 matching chair are from 1970s, model DS31. It features original brown leather seat and beautifully stitched, well-finished cushions. The legs are made from polished aluminum, adding a sleek touch to the design. De Sede is renowned for its high-quality leather craftsmanship and exceptional comfort. This sofa has lots of patina and has new leather on the armrests of the chairs. This piece is attributed to the mentioned designer/maker. It has no attribution mark and no official proof of authenticity, however it is well documented in design history. I take full responsibility for any authenticity issues arising from misattribution