EN
The bronze plate brooch of a type defined as cruciform or quatrefoil (Fig. 2) discovered in 2011 on Lake Gopło (Fig. 1) has been dated to the 9th/10th–13th c. and finds close analogies in Lithuania as well as on the Prussian and Yotvingian territory. The brooch testifies to contacts between the region of Kruszwica, important centre of the Early Piast state, and the Balt territory.