The bishops of Basel held imperial minting rights granted by the Salian emperors, and coinage from this diocese circulated across the upper Rhine corridor throughout the twelfth century. Production was almost certainly contracted to local moneyers rather than operated as a episcopal monopoly, which accounts for the considerable variation in die quality and flan preparation seen across surviving examples of this type.
The bishops of Basel held imperial minting rights granted by the Salian emperors, and coinage from this diocese circulated across the upper Rhine corridor throughout the twelfth century. Production was almost certainly contracted to local moneyers rather than operated as a episcopal monopoly, which accounts for the considerable variation in die quality and flan preparation seen across surviving examples of this type.