The Swing chair - designed in 1984 for Rosenthal by Jutta and Herbert Ohl. Jutta Ohl is a painter and sculptress and Herbert Ohl is an architect. The spring-swing-chair »Swing«, a very comfortable, mobile and stackable piece of furniture made of coated steel. It is no longer in production and very rare. It measure 17.75" wide, 32" high in back, 22" deep with a 19.5" seat height. It is a very sturdy little chair, heavier than it looks. In very good condition with minor wear and scratches. The label (which I forgot to take a picture of) reads "Rosenthal Swing, design H & J Ohl."
This chair ships via greyhound for $50. UPS is also available but will be more expensive.