2 Dollars - Elizabeth II Hydra

Niue has operated as a prolific licensing hub for commemorative bullion since the 1990s, effectively leasing its sovereign issuing authority to foreign minting programs — this piece being a product of that arrangement rather than any domestic monetary need. The island's population hovers around 1,500, making its coinage output per capita almost certainly the highest of any issuing authority on earth.

The Hydra belongs to a broader Polish-minted mythology series produced for the Niuean license, struck at Mennica Polska in Warsaw.