Literature: Mies van der Rohe, Möbel und Bauten in Stuttgart, Brno und Barcelona Publisher: Vitra Design Museum. P. 37
In the mentioned book this version of the screwed metal construction is being explaned as the very first version of the Barcelona furniture, manufactured by Jos. Müller Metallwerkstätten. Due to the exeptional condition we suppose this stool was probably produced in the thirties.
