Does Anyone Know Who Designed/Built This Chair?

Interior design magazine RUM posted these shots of an NYC apartment renovation: While the newer furniture pieces are credited, this vernacular chair in the second shot is not: Image: Piet Albert Goethals The seatback flows downward to become the front leg, of which there are only three, to handle uneven flooring. It is a fascinating piece of furniture, and one I've never seen before. I am dying to inspect it up close to see how it was joined. Using Google's image search turns up some...