The Tuvaluan Dollar is the currency of Tuvalu - a small nation in the Pacific Ocean. Tuvalu has never had banknotes of its own, and has been issuing coins since 1976; these circulate together with coins of the Australian Dollar, which is also legal tender in the country, and to which the Tuvaluan Dollar is pegged.
The Australian Perth Mint issues a large variety of non-circulating legal tender (NCLT) coins under the authority of Tuvalu. Some of these are in the one dollar denomination, and have the same specifications that the mint uses for its large non-circulating Australian dollar range; these are larger than the normal circulating dollar coins.
This coin was issued in celebration of the Chinese New Year 2017.
The mint says about it:
The Perth Mint and Australia Post are pleased to celebrate Chinese New Year with a stunning Stamp and Coin Cover. Chinese New Year is one of the most important celebrations and holidays for Chinese people. The festival is a time for families to reunite, to honour household and heavenly deities, as well as ancestors, and remains the most important social and economic holiday in China. | 
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