This miniature chair is an exact replica at 1:6 scale of Ron Arad's Big Easy chair, first produced in 1988. I purchased it directly from Vitra Design Museum approximately 15 to 20 years ago, and it has been in a display case, untouched, ever since. It comes with the original box and informational booklet, as shown in the first photo. This impressive piece, made of stainless sheet steel and measuring 130 x 172 x 213 mm, has a current list price of $1340, so you're getting a great deal on a collector's item. 

For more information about the Big Easy miniature chair, go to https://www.vitra.com/en-ca/living/product/details/miniatures-collection-big-easy.