Cross enamel disc brooch, Bos (2008) Type 2.5.1.6 Wamers (1994) Cross enamel brooch Type 2: flat box-shaped body; cellular enamel; rounded gussets or peltae; notched or smooth edge
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.
Egon Wamers, Die frühmittelalterlichen Lesefunde aus der Löhrstrasse (Baustelle Hilton II) in Mainz. Mainzer archäologische Schriften 1 (Mainz 1994).