These amulets which were used for hanging on children's cradles referred to by Italian Jews as 'Shaddai' amulet because the name of G-d was inscribed on the majority of them.
Israel Vitale was a Jewish silversmith from the north Italian town of Alessandria of which most of the Jewish inhabitants were members of the Vitale family
Enc. Judaica vol.2 columns 566-567
Bargoni, Augusto, Mastri Orafi e Argentieri in Piemonte, Torino, p.255 and p.306 (v-76)