Florin. The original gold florin was first used at Florence in the 13th century. It took its name either from the city or from a lily, which was the sign stamped on one of the faces. The florin is known in Germany as a gulden, and the modern Austrian gulden still bears the mark Fl. The ordinary value of the gulden was from Is. 8d. to Is. lOd. English. The name "florin" has only recently been introduced into England.