1 Ducat - Charles III

Charles III of Habsburg — better known in Spain as Charles II's successor and in Austria as Charles VI — ruled Transylvania as part of the broader Habsburg reconquest that followed Ottoman expulsion from the region in the 1690s. The principality was incorporated into the Habsburg realm not as a kingdom but as a grand principality, governed under separate administrative arrangements that persisted well into the 18th century. These ducats were struck at the Hermannstadt or Nagybánya mints, both operating under the Vienna-directed Hofkammer.

The .986 fineness is consistent with the longstanding ducat standard established in 1559, which the Habsburgs maintained with unusual discipline across their minting operations for over two centuries.