5 Dollars - Charles III Katyn massacre

The Katyń massacre of April–May 1940 saw Soviet NKVD forces execute approximately 22,000 Polish officers, intellectuals, and prisoners of war across several sites, most notoriously the Katyń forest near Smolensk. The USSR denied responsibility for five decades, formally acknowledging the killings only in 1990 under Gorbachev. Poland's pursuit of that admission defined a significant thread of Cold War-era diplomacy.

Niue has become one of the more active small-nation minting platforms for Polish commemorative issues, licensing its sovereign authority to Polish distributors. This one-tenth-ounce gold piece joins a broader wave of Katyń numismatic commemoratives issued around the 85th anniversary of the executions.