Denier

The Bishopric of Basel held imperial minting rights granted by the Salian emperors, and coins struck under this authority circulated widely across the upper Rhine corridor. The long date range reflects institutional continuity rather than a single reign — episcopal minting at Basel persisted through multiple bishops without significant interruption, making precise attribution within the series genuinely difficult.

Dies for these deniers were cut locally, and the workmanship varies considerably across the series.