Philip of Spanheim and Ulrich of Spanheim ruled Carinthia jointly during one of the more turbulent stretches of 13th-century Austrian dynastic politics, and the Friesach mint — long one of the most productive in the southeastern Alpine region — continued striking these thin bracteate-style pfennigs under their combined authority. Friesach pfennigs had by this point circulated so widely across the Adriatic trade routes that "Friesacher" became a generic term for silver coinage in parts of the medieval Balkans.
Philip of Spanheim and Ulrich of Spanheim ruled Carinthia jointly during one of the more turbulent stretches of 13th-century Austrian dynastic politics, and the Friesach mint — long one of the most productive in the southeastern Alpine region — continued striking these thin bracteate-style pfennigs under their combined authority. Friesach pfennigs had by this point circulated so widely across the Adriatic trade routes that "Friesacher" became a generic term for silver coinage in parts of the medieval Balkans.