The bucchero is a special clay, from the Etruscan times, was dried in open air and after baked in oven at very high temperature, which removes oxygen and transforms clay into ferrous-oxide, which is a black-glossy-thin paste.
They were shown at IX Triennale di Milano 1951.
Comes with a official government stamped self certification certificate for the export of contemporary arts signed by the great grand daughter of Gio Ponti.
Others from the set available. This vase is priced lower as there is a very slight crack in one handle, possible repair. See image