1 Dollar Andorra

Papua New Guinea does not issue coinage denominated in dollars, and Andorra — which uses the euro — has no monetary relationship with Port Moresby. This pairing of issuer and subject has the hallmarks of a novelty or souvenir strike produced for the collector market rather than any sanctioned mint program, a category that proliferated sharply after 2010 as private mints sought low-cost steel blanks to produce themed issues with marginal numismatic standing.