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 coins under the authority of Tuvalu. Some of these are in the silver ounce format (abbreviated as 1 oz). Strictly speaking, they are not bullion as they are priced at a premium and are targeted at collectors who appreciate them for their artistic merit and collectable value and not just for their precious metal content.
This coin was issued to celebrate the Diwali Festival in 2017. The Mint says about it:
Diwali is an ancient five day Hindu "festival of lights". Celebrated by millions of Hindus, Sikhs, Jains and some Buddhists around the world, is it considered one of the happiest holidays in India and Nepal. The main theme of the festival is the triumph of light over darkness, goodness over evil, knowledge over ignorance and hope over despair. | 
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