2 Crowns - Elizabeth II Discovery of Palladium

Palladium was isolated in 1803 by William Hyde Wollaston, who named it after the asteroid Pallas, itself discovered just weeks earlier. Wollaston kept his extraction process secret for years, anonymously selling the metal through a London shop before eventually publishing his method in 1805. The Isle of Man has issued palladium coinage intermittently since the 1980s, among the earliest sovereign issuers to treat the metal as a numismatic medium rather than purely an industrial commodity.

At two troy ounces, this is a substantial palladium piece. The metal's chronic supply concentration — historically over 40% from a single Russian mining complex at Norilsk — has made palladium spot prices notoriously volatile compared to gold or silver.