Gros - Philipp de Platea

Philipp de Platea served as Bishop of Sion during an exceptionally turbulent moment in Valais history — the Reformation was fracturing Swiss confederate politics, and the Valais itself would spend decades negotiating between Catholic loyalty and Protestant pressure from neighboring cantons. The episcopal mint at Sion retained the right to strike billon coinage as an assertion of the see's temporal authority, which was perpetually contested by the canton's powerful local councils.

His episcopate lasted barely two years, making this gros one of the shorter-lived issues in the Sion series.