Medieval Serbian charters
Medieval Serbian charters includes mainly royal chrysobulls (hrisovulje) and charters (povelje) determining the legal status of endowments and regulation of the population, their rights and obligations of the monastic estates. As of 1989, there were 165 preserved monastery charters, a few royal chrysobulls, and one city charter.
Source: Wikipedia — Medieval Serbian charters (CC BY-SA 4.0)