The Ducat (D) is the currency of the Middenrealm and the Horasian Empire and for this reason the most common means of payment of Aventuria.
Ducats are gold coins. They are the largest unit of payment in Drakensang.
Aventurian money also has weight; one ducat or five thalers or ten farthings each weigh one ounce. However, in Drakensang money is stored in the Quest Bag and therefore in effect "has no weight".