5 Dollars - Leonard I U.S. AH-1S Hughes 'Cobra' Helicopter

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 production quotas, issued a prolific series of novelty coinage throughout the 1980s and 1990s aimed squarely at the collector and souvenir market. These pieces carried no real monetary function and were never legal tender in any recognized jurisdiction. The AH-1S Cobra was the U.S. Army's primary attack helicopter during this period, seeing extensive service from Vietnam through the Gulf War.

X#72 places this squarely in the Krause exonumia listings — the designation itself confirming it outside mainstream numismatic cataloguing.