5 Dollars - Elizabeth II Signs of the Zodiac

Tuvalu functions as a convenient licensing vehicle for the Perth Mint, which has issued commemorative silver rounds under Tuvaluan authority for decades. The country's actual circulating coinage is negligible; these legal-tender designations exist primarily to satisfy collector market requirements for sovereign backing. The 155.5g weight is the standard five-troy-ounce planchet format that Perth adopted aggressively in the 2010s to compete with the Royal Canadian Mint's kilo and multi-ounce bullion programs.

The .9999 fineness is notably purer than sterling and even exceeds the .999 standard common to most sovereign bullion series before 2010.