The guilder or gulden was the name of several gold coins used during the Holy Roman Empire. It first referred to the Italian gold florin introduced in the 13th century. It then referred to the Rhenish gulden issued by several states of the Holy Roman Empire from the 14th century.
With increasingly standardized currencies in the early modern period, gulden or guilder became a term for various early modern and modern currencies, detached from actual gold coins. The Dutch guilder first emerged as the currency of the Burgundian Netherlands after the monetary reforms of 1435 under Philip the Good. It remained the national currency of the Netherlands until it was replaced by the euro on 1 January 2002. Hoog dives into the design of the original Dutch banknote.