Pfennig - Otto von Grandson

Otto von Grandson — better known as a Savoyard knight and diplomat in the service of Edward I of England — held the Bishopric of Basel from 1306 to 1309 under genuinely contested circumstances. His appointment was a papal provision over local chapter opposition, and he never fully consolidated ecclesiastical authority before his death.

The Basel pfennig of this period was struck under the bishop's mint right, a privilege the see had held since the tenth century. Otto's tenure was short enough that documented output from his episcopate is sparse.