5 Crowns - Elizabeth II 21st Century

This piece is one of the most mechanically complex coins Gibraltar ever produced — joining three noble metals in a single planchet required bonding platinum, gold, and silver at tolerances that most mints weren't equipped to manage in 2001. Gibraltar's commemorative program at the turn of the millennium was notably aggressive, producing high-denomination trimetallic and bimetallic issues that far exceeded the technical ambitions of larger sovereign mints. The 155.5g weight places it firmly in the five-troy-ounce category, meaning the intrinsic metal value alone fluctuates substantially with spot prices across three separate markets.