3 Argenteus - Aureus Magnus Pope Pius XII

Aureus Magnus was a private Swiss minting operation active in the 1950s that produced medallic issues nominally denominated in fantasy currencies — the "Argenteus" unit has no backing, no issuing state, and no legal tender status anywhere. The 1958 date ties this piece to the death of Pius XII in October of that year, which triggered a minor commercial wave of commemorative and medallic issues across European private mints.

The X# prefix in the Krause catalog designates it as a non-circulating or fantasy issue. Collector interest is driven almost entirely by the papal subject matter rather than any numismatic scarcity.