:''This page is about the Italian coin Florin. See also
florin for other types.''

The back of an Italian florin coin

The front of an Italian florin coin
The
Italian 'florin' was struck from 1252 to 1523 with no significant change in its
design or
metal content standard. It had 54
grains of gold (3.5g). The "fiorino d'oro" of the Republic of
Florence was the first
European gold coin struck in sufficient quantities to play a significant commercial role since the seventh century. As many Florentine banks were international supercompanies with branches across Europe, the florin quickly became the dominant trade coin of Western Europe for large scale transactions, replacing
silver bars in multiples of the mark (a
weight unit equal to eight troy ounces or two thirds of a troy pound).
In the fourteenth century, a hundred and fifty European states and local coin issuing authorities made their own copies of the florin. The most important of these was the
Hungarian forint because the
Kingdom of Hungary (more precisely the mountains of
Slovakia and
Transylvania) was the only major source of gold mined in Europe (until the
New World began to contribute to the supply in the sixteenth and seventeenth centuries, most of the gold used in Europe came from
Africa).
The design of the original Florentine florins was the distinctive
fleur de lis badge of the city on one side and on the other a standing facing figure of
St. John the Baptist wearing a hair shirt. On other countries' florins, first the inscriptions were changed (from "Florentia" around the fleur, and the name of the saint on the other), then local
heraldic devices were substituted for the fleur de lis, many resembling the
Virgin Mary.
Usually later, other figures were substituted for St. John. On the Hungarian forints, St. John was re-labelled
St. Ladislaus, an early Christian King and patron saint of Hungary, and a battle ax substituted for the original's sceptre. Gradually the image became more regal looking. The weight of the original fiorino d'oro of Florence was chosen to equal the value of one
lira (i.e. a nominal pound of 240 inflated denari) in the local
money of account in 1252. However, the gold content of the florin did not change while the money of account continued to
inflate; by 1500, a florin was worth seven Florentine lire. The values of other countries' money continually varied against each other, reinforcing the florin's utility as a common measure of value for foreign exchange transactions. By the end of the fourteenth century, a local variant of the florin, minted by several
German states under a monetary convention at a lower weight and alloy standard, became the "Rheingulden" widely used throughout Germany. In the fifteenth century, the Rheingulden was adopted by the
Holy Roman Empire as the "Reichsgulden".