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 coins under the authority of Niue. Most of these are in standard shapes and sizes, but some - like these silver foils - use different formats. The 35 gram silver foils are very thin, so that they can be large in surface, and issued with poster-like coloured reverses. The are "Non-Circulating Legal Tender" (NCLT) and are targeted at collectors who appreciate them for their artistic or sentimental value.