Chair produced for the offices of Palazzo Montecatini (Milan), in aluminum and skai, model 1938 Montecatini SA, for Kardex In the autumn of 1935, in fact, Guido Donegani, president of the Montecatini company, commissioned the architect Giò Ponti to the new headquarters of the palace. Publications: Charlotte & Peter Fiell, Industrial design A-Z, Taschen, 2016, p. 441. We thank the Archive Gio Ponti (Milan) for confirming the attribution to Gio Ponti, at the request of the buyer the archive is available to produce the certificate of authenticity.