Crazia - Cosimo I

Cosimo I inherited Florence at seventeen following the assassination of Alessandro de' Medici, and the crazia was among the small-denomination billon issues he reformed as part of consolidating ducal monetary authority in the early years of his reign. The denomination itself — derived from "grazia," a grace — was a workhorse of everyday Florentine commerce, handled by the sort of people who never touched a gold florin.

The MIR FI#136 attribution places this squarely in the pre-1557 emission, before Cosimo's later monetary reorganizations following his military consolidation of Siena.