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 Australis.
The Aurora Australis is a dramatic display of green, blue, and multifarious shades of flickering light which occurs in the Antarctic night sky. This superb piece visualises the spectacle, also known as the Southern Lights, from the bow of a wooden boat. Conveyed in shimmering tones, the celestial display is mirrored on the reflective still waters of a mountain lake. | 
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