100 Pounds - Elizabeth II British Pounds Sterling

Gibraltar's 1975 gold issues were produced as the territory's political status was under acute pressure — Spain had closed the land border in 1969 and kept it shut, a situation that would persist until 1982. Issuing prestige bullion coinage was, in part, a mechanism for Gibraltar to assert fiscal and institutional identity during an extended period of isolation. The 31.103g weight matches the troy ounce standard precisely, placing this squarely in the tradition of bullion-equivalent sovereign issues rather than purely commemorative ones.