5 Cents

Redonda is an uninhabited Caribbean island of roughly 1.6 square kilometers, and its status as a "kingdom" traces to an 1865 claim by Matthew Dowdy Shiell, whose son later handed the title to a poet friend rather than any government. The succession has since fragmented into multiple rival claimants, none recognized by any state. Coins issued under this authority are fantasy pieces with no circulating function — collected as curiosities of numismatic self-invention rather than as monetary artifacts.