Niue, a sovereign state in free association with New Zealand, uses two official legal tender currencies. The New Zealand Dollar is the circulation currency for daily transactions, while the government also authorises legal tender coins in the Niue Dollar currency for collector's purposes.
A number of mints issue a large variety of commemorative and collector coins under the authority of Niue. These coins are dedicated to historical or general popular culture themes not related to Niue itself. Many of them are in standard bullion sizes - such as one ounce of gold (abbreviated as 1 oz Au, where "Au" comes from the Latin word for gold, Aurum).
Downies says about this coin:
Set against the backdrop of Sedona, Arizona, this legal tender wonder paints a fascinating numismatic tale that could be a poster for the next sci-fi blockbuster. Sedona is famous for its rugged landscapes, dramatic red rock formations and reputation as a hotspot for extraterrestrial activity - famed as having some of the highest UFO sightings on the planet!
The reverse of the 2024 $100 Alien Encounters 1oz Gold Proof Coin features haunting desert vistas, struck in proof quality detail and perfection. Dominating the scene is an intricately rendered alien, gazing outward with the neon colours of the heavens reflected in its eerie eyes. The otherworldly energy of the sky is achieved through Digital Colour minting, resulting in a spectacular multi-coloured vista that looks phenomenal against the gleaming 99.99% gold flan. | 
Search for Niue: Gold Ounce 2024 Alien Encounters on eBay 