Old twisted wire adjustable chair. You can adjust the seat height of this chair. I found around 20 1/2" was the highest I would put it as any higher and I found it a bit too wobbly. It has such a beautiful form. The chair shows some wear and marks. There are a few small areas showing some light surface rust (mainly on the feet). The underside of the seat is marked patented 1889. Please pm me for additional pictures.
