1 Crown - Edward VIII Peel Castle; Silver; Piedfort

Edward VIII abdicated in December 1936 before a coronation ever took place, meaning no circulating coinage bearing his effigy entered production in Britain or most of its territories. The Isle of Man, which issues its own coinage under Crown dependency status, has returned to him repeatedly as a subject — partly because the abdication itself remains commercially compelling, and partly because Manx issues face no constitutional awkwardness that might restrain a Westminster mint.

The piedfort format — double the standard planchet thickness — was revived in modern British isles coinage largely through the Royal Mint's collector programs of the early 1980s, a convention the Isle of Man Treasury adopted almost immediately for prestige issues.