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. Many of them are made using "smartminting" techniques and have features not generally found in circulation coins - e.g. high relief, full colour printing and/or different forms, including fully three dimensional (3D).
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 particular coin denominated as One Niue Dollar is not in a standard ounce-based size.
This coin commemorates the 100th Anniversary of the outbreak of World War I.
All elements depicted on the coin refer symbolically to the first world war operations. Prussian and British helmets are presented as symbols of the Triple Entente and Central Powers between which the armed conflict broke out. A tank and barricades symbolise a clash of modern technologies with strategy and tactics. For the first time in military history new machines, like airplanes, submarines, tanks and trucks, were used. The coin also features an eagle of the Polish Legions, symbolising the resurrection of Polish sovereignty.
The coin stands out due to the use of a latent image - on its reverse 1914 and 2014 change depending on a viewing angle. | 
Search for Niue: One Dollar Silver 2014 World War I on eBay 
