Switzerland issued this coin specifically for the UEFA European Championship hosted jointly with Portugal in 2004 — not, despite what the name suggests, for FIFA. The "FIFA" designation refers to Switzerland's longstanding series of commemorative 20-franc pieces authorized under federal law, not to any FIFA tournament.
The .835 silver fineness traces directly to the 19th-century Latin Monetary Union standard, which Switzerland never fully abandoned for its commemorative program even after the LMU dissolved in 1927.
Switzerland issued this coin specifically for the UEFA European Championship hosted jointly with Portugal in 2004 — not, despite what the name suggests, for FIFA. The "FIFA" designation refers to Switzerland's longstanding series of commemorative 20-franc pieces authorized under federal law, not to any FIFA tournament.
The .835 silver fineness traces directly to the 19th-century Latin Monetary Union standard, which Switzerland never fully abandoned for its commemorative program even after the LMU dissolved in 1927.