1 Sovereign - Leonard I Automobile Centennial

Hutt River Province declared secession from Western Australia in 1970 after a dispute over wheat production quotas — a grievance that Leonard Casley, who styled himself Prince Leonard I, pursued with surprising bureaucratic tenacity for decades. By 1985, the micro-nation had been issuing collector coins for several years, targeting the commemorative bullion market rather than any pretense of domestic circulation.

The weight matches a standard British sovereign specification almost exactly, which was a deliberate choice to give the pieces a legible benchmark value for buyers. Hutt River's coinage program was primarily a revenue mechanism; the province's XC reference numbers are catalogued in Krause's unusual issuers volumes precisely because no conventional national classification applies.