Rolf Benz AK 644: Timeless Straightforwardness in Black. This sofa is a prime example of what Rolf Benz does best: clear, uncluttered design that transcends trends. The AK 644 model impresses with its classic modernism and sophisticated presence. The three-seater is upholstered in high-quality black leather. The smooth surface has a subtle sheen, lending the piece a cool elegance and making it resistant to everyday wear and tear. The design language is strictly geometric and cubic: the lines run horizontally and calmly. The wide, flat armrests are particularly striking, appearing like solid blocks and providing a solid finish to the design. The seat and backrest are visually divided into two wide segments, yet offer ample space for three people. The upholstery is firm and retains its shape, ideal for upright, comfortable sitting. The solid frame is supported by simple, cylindrical, silver metal legs. They slightly raise the sofa, ensuring stability and adding a modern, bright accent to the deep black of the leather. I have official proof of authenticity such as vintage catalogs, designer records, or other literature sources and take full responsibility for any authenticity issues arising from misattribution