This is an original Heli three-seat sofa, initially designed by Otto Zapf for Knoll International in 1983. This particular piece was produced in Czechoslovakia in the early 1990s, and it retains its original mushroom brown leather upholstery. The armrests and backrests have a slightly rounded curve and feature detailed exposed stitching. The sofa offers lumbar support with back pillows, and it sits on an elevated steel base.

The piece measures 32 inches deep, 82.5 inches wide, and 29.5 inches high. It has a seat height of 17 inches, and an arm height of 21.5 inches. The brown leather is patinated and it has some surface scratches. There are a handful of marks on the back, and there is wear to the corners and edges. Overall, this sofa is in good vintage condition. Please see photos.