Guilder

This was the term that became current in the southern and western parts of the Holy Roman Empire for the Fiorino d'oro (introduced in 1252 in the Republic of Florence).

It then referred to the Rhenish gulden (florenus Rheni) issued by several states of the Holy Roman Empire from the 14th century.

The Dutch guilder first emerged as the currency of the Burgundian Netherlands after the monetary reforms of 1435, under Philip the Good.

The Reichsmünzordnung of 1524 defined fixed standards for the gold Rhenish gulden and the Guldengroschen of equal value.

[1]: 364-365  The latter gulden was then defined over the succeeding centuries as a currency unit worth a fraction of the silver Reichsthaler.