Brakteat, which in the interpretation of B. Haczewska is a representation of a Romanesque vault, which may mean a baptistery in this case due to the images of deer appearing under the arches (baptismal / rebirth symbolism).
Representation: four arches forming a cross with a ring and four points inside it, under each arch an animal with long horns.
A rare, iconographically interesting brakteat.