The article presents the characteristics of three fragments of ceramic vessels that were found during the investigations of the medieval stronghold in Grabin, within Ostróda county. Their uniqueness stems from their decoration, which was made using a stamp technique (ceramics decorated with a stamp decoration are called StempelverzierteKeramik), probably with a bracteate type coin. In order to be able to present these artefacts as fully as possible, it is also necessary to present the context of their discovery, the history of the site as well as an attempt at interpretation.