1500 Dollars - Elizabeth II Pro Memoria

This 10-kilogram piece is one of a handful of ultra-high-weight bullion issues produced in the 2010s by the Perth Mint under Niue's authority — a Pacific island territory of New Zealand with a population under 2,000, whose mint licensing arrangements have made it a surprisingly prolific issuer of prestige collector pieces. "Pro Memoria" issues of this period were struck explicitly as memorial objects rather than tradeable bullion, with mintages typically in the single or low double digits.