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.
The mint says about this coin:
A compelling example of outstanding numismatic artistry, this 1oz silver proof coin depicts the spectacular phenomenon of the Aurora Borealis.
The Aurora Borealis is an enchanting dance of coloured lights that illuminate Arctic skies at night. Nordic legend imagined that its spectacular celestial rays were pathways between the mortal realm and the spirit world. The superbly coloured coin visualises the shimmering spectacle, also known as the Northern Lights, from a wooden footbridge amid fjord, forest, and mountain scenery. | 
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