200 Pounds - Charles III Queen Elizabeth II: The Mary Gillick Portrait; Gold Proof

Mary Gillick's portrait of Elizabeth II, used on British and Commonwealth coinage from 1953, was notably never updated during her reign — Gillick herself resisted modifications proposed by the Royal Mint, and the effigy went through quiet, largely undocumented revisions before a compromise was reached. It remained on UK coinage until 1968. Issuing it now on a coin bearing Charles III's name creates a deliberate numismatic tension: two monarchs on a single piece, one of whom never authorized the other's portrait.