1 Piastra - Giovanni Battista Spinola Sede Vacante

Giovanni Battista Spinola served as Camerlengo of the Holy Roman Church during the Sede Vacante following the death of Innocent XII in September 1700 — the interregnum authority responsible for administering the Papal States and, critically, authorizing coinage struck in that liminal period before a new pope was elected. Clement XI was elected in November, making this a window of roughly seven weeks. Sede Vacante issues were struck as a matter of constitutional necessity, not commemoration, and their survival in any grade reflects the brevity of that window.