25 Dollars - Leonard I Chemical Warfare

Hutt River Province — the self-declared micronation established by Leonard Casley in Western Australia in 1970 after a dispute with the state government over wheat quotas — issued a series of silver rounds in the early 1990s targeting the thematic collector market. The Chemical Warfare issue appeared the same year coalition forces dismantled Iraqi stockpiles following the Gulf War, a timing almost certainly deliberate.

These pieces were never legal tender in any recognized jurisdiction and traded purely as novelty bullion.