Florin - Louis I

Louis I of Hungary — known as "the Great" — modeled his gold florin directly on the Florentine fiorino d'oro, a deliberate policy choice that kept Hungarian coinage interoperable with the dominant trade currency of 14th-century Europe. Hungary's access to the rich gold mines of Transylvania and the northern Hungarian ore fields made it one of the largest gold producers on the continent, and the florin became the engine of royal finance during his aggressive Adriatic and Balkan campaigns.

The 1370-1371 dating corresponds precisely to Louis's acquisition of the Polish crown following the death of his uncle Casimir III — a dynastic windfall that briefly united Hungary and Poland under a single ruler for the first time.