20 Francs CERN

CERN, the European Organization for Nuclear Research, sits astride the Franco-Swiss border near Geneva and has operated the world's largest particle physics laboratory since 1954. Switzerland's long-standing role as CERN's host nation — and the location of its headquarters in Meyrin — makes this commemorative a matter of institutional pride as much as numismatic tradition. The Large Hadron Collider, which confirmed the existence of the Higgs boson in 2012, runs in a tunnel 100 metres underground spanning roughly 27 kilometres in circumference.

Swissmint has issued science-themed commemoratives with increasing frequency over the past decade, though this marks a rare instance of honoring an intergovernmental organization rather than a Swiss national figure or event.