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 five-ounce format (abbreviated as 5 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:
Struck from 5oz of 99.99% pure silver with coloured and antiqued finishes, this impressive piece features awe-inspiring astronomical art.
Humans have observed the night sky for millennia. Beyond the Moon, we identified planets and comets in our Solar System, as well as more distant stars and constellations. The invention of the telescope in the early 17th century advanced our understanding of Earth's place within the vast cosmos. With the latest space telescopes, we have been able to see much further and more clearly than ever before, discovering huge numbers of galaxies and other fascinating cosmic objects, including nebulae, giant clouds of dust and gas, in which new stars are born. | 
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