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:
In European mythology, dragons are represented as fire-breathing, lizard-like monsters that can fly. When provoked to anger, they are capable of incinerating foes with scorching breath. They also love gold, hoarding and guarding it fiercely in subterranean lairs. | 
Search for Tuvalu: Silver Five Ounces 2023 Dragon on eBay 