On December 15 of 1991, in Cagliari, in Corso Vittorio Emanuele 56, in the historical crypt of San Francesco al Corso, where was located the typography shop of the art collector Franco Girina, it was opened the Plexus International Storage, with the purpose to keep artworks, records and relics related to the history of Plexus at the disposal of interested scholars as well as for art shows. It was managed under the creative direction of Gaetano Brundu, who curated its first exhibition “Opening”, made as an installation created with the Plexus Black Box’s relics and records recovered from the preview Plexus Colombina event held in Carloforte in the 1991 summer.