 It is called, in the supplementary description of this silver piece, one piastre.However in 1823 George Crabb, in his "Universal Technological Dictionary" Volume 2, in addition to supporting the above relative values of Onzio, Tari and Grani in accounting, lists 120 Grani as equivalent to one Florino.Crabb also lists the Ponto, the Carlino, the Ducat and the Scudo or Crown and their equivalence to the Grano, however no mention of the Piastre.