These chairs were designed by Adam Stegner and were produced by Pagholz Fl?totto in the 1960s. They were produced for the schulmobel line and have the manufacturers mark impressed into the wood. They are very well made and are crafted from a sturdy multi-ply steam bentwood. They do swivel and are in excellent condition. Also if you are looking for an unusual side table these just might work. Excellent original condition. They are shown next to a Saarinen side table for scale.