1 Dollar - Elizabeth II The Duke and Duchess of Cambridge

Issued to mark the announcement of the Duchess of Cambridge's first pregnancy, this Cook Islands dollar belongs to a well-worn category of Pacific island commemoratives produced largely for the souvenir and collector market rather than circulation. Cook Islands has issued coins under licensing arrangements for decades, with the actual striking typically contracted to European or Australian mints. Gold-plated copper-nickel at this weight and diameter puts it squarely in the promotional collectible tier.