20 Dollars - Leonard I A-10 Thunderbolt II

Hutt River Province — the self-declared micronation carved out of a Western Australian wheat farm by Leonard Casley in 1970 after a dispute with the state government over wheat quotas — issued a series of numismatic pieces throughout the 1980s and 1990s aimed squarely at collectors rather than any functioning economy. This A-10 Thunderbolt II issue falls squarely in that category: gold-plated bronze with no circulation history whatsoever, produced for export to the souvenir and novelty coin market.

Casley, who styled himself Prince Leonard I, had no minting facility of his own; these pieces were commercially produced under contract.