This important chair was the first pieces of furniture that Klaarhamer designed that were produced in larger quantities around 1917, (although probably still manufactured in very limited numbers) by company called NV Nederlandse Meubel en Houtwarenfabriek in Zaandam. The early designs of modernist architect Piet Klaarhamer use simple, rudimentary constructions, and demonstrate an honest use of the materials used. 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