1 Crown - Elizabeth II Lost At Sea 1939-1945, Sinking of the HMAS Sydney - Gold Plated

HMAS Sydney was lost in November 1941 off the Western Australian coast after an engagement with the disguised German raider Kormoran — all 645 men aboard were killed, making it Australia's worst naval disaster. The wreck wasn't located until 2008, lying in over 2,400 metres of water roughly 200 kilometres west of Shark Bay. Tristan da Cunha, a British Overseas Territory with no meaningful connection to the engagement, issues collector crowns under licensing arrangements as a revenue mechanism; the island's actual circulating coinage sees almost no domestic use.