The F675 als known as the Butterfly Chair was designed by Pierre Paulin in 1963 and manufactured by Artifort, Holland. This chair with elegant lines is edited with the original cow skin upholstery. The frame is made of high quality metal and has a great strong construction. The frame has black plastic protection feet. 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