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 a Mint of Poland series featuring the Chinese Lunar Calendar and is dedicated to the 2015 Year of the Goat.
The Mint says about it:
"A unique cabbage-shaped coin designed to commemorate the upcoming Year of the Goat 2015. The Goat is the most protective sign of the Chinese zodiacs and an embodiment of empathy and tenderness. People born in the Year of the Goat tend to give their whole hearts to their beloved ones.
The silver coin with an image of this symbol of care makes a wonderful gift for every occasion. An exceptional theme of the coin is emphasized by its offbeat packaging in the shape of a cabbage, which symbolizes fertility and protection. A transparent lid of the packaging enables its effective exposure.
The Year of the Goat in the Chinese calendar lasts from 19th February 2015 to 7th February 2016."
Finish: proof, coloured.
Packaging: special themed box with inscriptions in English and Russian.
Date of issue: January 2015. | 
Search for Niue: One Dollar Silver 2015 All the Best on eBay 
