5 Dollars - Elizabeth II Battle of Monte Cassino

Monte Cassino was taken on the fourth assault in May 1944, after months of grinding attrition that destroyed the sixth-century Benedictine abbey and killed tens of thousands across Allied and Axis forces combined. Polish II Corps under General Anders — many of them former Soviet POWs and deportees who had walked out of the USSR via Iran — planted their flag on the ruins. For Anders's men, it was as much a statement about Poland's postwar fate as it was a military objective.

Niue has issued commemorative gold under New Zealand's currency umbrella since the 1990s, producing collector bullion with no pretense of circulation intent.