15 Dollars - Elizabeth II Medusa Gorgon

Niue has operated a bullion and collector coin program since the late 1980s, licensing its name and legal tender status to foreign minting operations — primarily the New Zealand Mint — in exchange for revenue that constitutes a meaningful share of the island's income. The arrangement is straightforwardly commercial, and most issues are produced for the international collector market rather than any domestic monetary purpose.

The Medusa issue belongs to a broader wave of high-relief, antique-finished silver rounds produced in the late 2010s, when competition among sovereign-licensed bullion programs drove mintages toward increasingly elaborate sculptural formats. At 250g, pieces like this one sit at the heavy end of collector strikes where die wear and planchet preparation become significant variables affecting surface quality across an edition.