Otto Wagner designed bentwood chairs for Thonet around the turn of the century. Take a look at Chaplins website and their huge list of designers. If you link to Otto Wagner on this list, you will see some of the designs that are in current production. And our reader replied: Perfect! I took a look at Chaplins (what a treasure-trove) and found they have a wide range of Thonet chairs.  Although they don’t seem to have the exact design, even on the Thonet website, they do stock very similar ones which might well do the job.   Thank you for your assistance and congratulations on a great website.