Hi Ronnie, the chair is a Swiss made gyroflex 82 pascal. It was manufactured in the early 80's and appeared in white on the Parkinson show on the BBC in the UK for a number of years! I have mixed reports about who designed it, but think that it was Albert Stoll, however British websites seem to claim that Gordon Russell designed it. It was inspired by the late Great Eames and their famous lounge chair created (an still in production) by Herman Miller.
Stuart Design Studio