Thank you for submitting your item for appraisal. This appears to a mid century modern circa 1970 3-seater chromed steel sofa or couch, inspired by scandinavian design, no maker´s mark. Socket head or Inbus screws have been around since the early 20th century, the leather´s umbra colour has been popular in the 1970s, unfortunately several anonymous manufacturers produced similar furniture, this sofa might be one of the nameless. The scratches and wear to the leather are an issue. The estimate is based on similar items by lesser known manufacturers sold at auction.