The filigrees marks of those manuscripts are very interesting from the scientific point of view, because they sometimes represent the only source of establishing the date a text has been writen, a text whose provenence is still unknown. There are about 53 types of filigrees that may be identified on the Slavonic manuscripts from Cluj-Napoca and the images they represent are quite divers: anchors inside of a cercle; half moons; simple or countermarked trefoil; capital or initial letters, simple or accompanying some figurines; lilies in cercle; hands and stars; crosses, horseshoes; axes; crossing swords; oxes heads; shields; coats of arms; boars; embattled towers; royal crowns; hearts; cavaliers in armour; keys; boats etc., all of them being stylyzed in various ways.
A more profound study of these wattered filigree marks may reveal information on the moment a manuscript has been writen, information about the provenance territory and even about the spreading area of this sort of paper. The study may also be the starting point in establishing the political and commercial relations between states or provinces in certain ages.
http://www.bjmures.ro/bd/B/001/13/B00113.pdf