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Pretty sure this is late 1800's based on the Thonet Wien label. Piece is in very good condition. There are some small splits in the bent wood. A bolt was put in one of the arms and the hole poorly filled. There is a small break in the cane. There are some scuffs and scratches to the finish but overall pretty good. I have another Thonet 1018 with an early label that has been painted.
I have a number of Mid Century / Danish Modern pieces for sale if you would like to look at the "more ads by this seller" link in this listing.
Chair is available in Northern RI. I'm located about 20 minutes from Providence and a little over an hour from Hartford or Boston.