5 Dollars - Leonard I Chemical Warfare

Hutt River Province — the self-declared micronation established in Western Australia in 1970 by Leonard Casley after a wheat quota dispute with the state government — issued a series of novelty coinage throughout the late 20th century, largely sold to collectors rather than circulated. This "Chemical Warfare" piece belongs to that broader commemorative program, though the specific subject matter reflects the international policy discussions surrounding the Chemical Weapons Convention negotiations that dominated the late 1980s and early 1990s before the treaty opened for signature in 1993.