HELP! Trying to get info on these Thonet Chairs

I bought these 2 chairs today in Stuttgart, Germany & am trying to figure out the maker & time frame of when they were made. Of course, somewhere here in Europe. The place I bought them from say Germany or Austria. The only problem with them is the paint chipping off from a bad spray paint job more recently made. The tags were covered with the spray paint, so this photo is of the "better" of the two.

Thanks for any help.