DD01 Bergeijk wall system by Martin Visser for Spectrum from the 1960s. Martin Visser (1922-2009) was a leading Dutch designer and architect, known for his minimalist and functional designs. His work for the furniture brand Spectrum in the 1950s and 1960s has had a great influence on Dutch design history. Visser was known for his simplicity, always putting functionality and ease of use first. 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