Enamel disc brooch with three large, kidney-shaped cells, Bos (2007/2008) Type 2.5.1.9
Literature:
J. M. Bos, Medieval brooches from the Dutch province of Friesland (Frisia). A regional perspective on the Wijnaldum brooches. Part II: Disc brooches. Palaeohistoria 49/50, 2007/2008, 709–793.