This essay analyses the history of an islamic seal accidentally found nearby the medieval castle of Lagopesole (Basilicata, South of Italy). Starting from the informations contained in a newspaper article in 1889, this contribution aims to draw attention on a forgotten artefact which find could be a remarkable witness of social interactions in medieval southern Italy. Significant data for the research have been deduced from the correspondence between the archaeologist Domenico Ridola and the arabist Michele Amari at the end of the 19th century. The two exchanged views and interpretations about the seal but today they should be revised. In this outlook both the translation given by Amari and a picture of the seal were useful to understand some aspects of the artefact. The purpose of the present text is to define more clearly the features of the seal, his history and its archaeological context.
