Tehelná street where the 1. Open atelier took place. Rudolf Sikora is not the author of this artefact. Nevertheless, he holds it in his personal collection as an object of commemoration to his formative period as well as to a notable artistic act from the beginning of the “normalisation era”. Afterwards, this plate had become a source of inspiration for the creation of the commemorating plate, referring to the five-year anniversary of the 1. Open atelier.