Kreuzer - Franz Friedrich Ambüel

Franz Friedrich Ambüel served as Bishop of Sion from 1760 until his death in 1780, presiding over a diocese that retained the unusual right to strike its own coinage well into the late eighteenth century — an ecclesiastical privilege increasingly out of step with the centralizing pressures reshaping Swiss cantonal politics. The Valais remained a separate republic allied to but distinct from the Swiss Confederation, which allowed Sion's bishops to maintain temporal coinage rights longer than most comparable sees elsewhere in Europe.

Billon issues of this type circulated alongside the heavier silver of the canton itself, filling the small-change gap that larger denominations left unserviced in mountain valley trade.