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 are 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.
The Mint says about this coin:
The final episode in the Star Wars prequel series, Star Wars: Revenge of the Sith, is celebrated with a 35g premium silver foil. This sixth release in the Star Wars Posters Premium Silver Foil Collection uses a combination of both colour and engraving to create a dramatic replica of the film poster’s artwork.
This delicate silver foil memento is protected by an acrylic holder which also frames it and allows for easy display. A Certificate of Authenticity is printed on the themed outer carrier. The foil is legal tender in Niue, the obverse featuring the Ian Rank-Broadley effigy of Her Majesty Queen Elizabeth II. | 
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