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, bullion and collector coins under the authority of Niue. These coins are dedicated to historical or general popular culture themes not related to Niue itself.
Some coins are marketed in standard bullion sizes, like half ounce silver, one ounce silver etc, and some of those are also denominated as $1, for which see respective lists. This coin, denominated as One Niue Dollar, is not in a standard ounce-based size and is made using a "smartminting" technique - meaning that it has features not generally found in circulation coins.
This coin is part of the Endangered Animal Species series and features the Amur Leopard.
The Mint says about it:
"The Mint of Poland is proud to present this coin from the series "Endangered Animal Species", which is dedicated to the Amur Leopard.
This unique coin reminds us how fragile is the beauty of animals being on the verge of extinction. Classified as critically endangered, the Amur leopard - one of the biggest wild cats in the world - is native to the Primorye region of southeastern Russia. This fearsome yet fascinating predator with spot-covered fur commands respect with its outstanding beauty." | 
Search for Niue: One Dollar Silver 2015 Amur Leopard on eBay 
