1 Rouble Leo

Transnistria's plastic rouble coins — issued in denominations including this one — represent one of the more unusual monetary experiments of the post-Soviet space. The Transnistrian Republican Bank introduced polymer coins in 2014 to replace earlier composite-material issues, a cost-cutting measure for a state whose economic isolation makes conventional minting arrangements perpetually complicated. This nickel-plated steel 2016 issue belongs to the later metallic series running parallel to those plastic pieces.

The territory's currency has no international recognition, mirroring the state itself, which remains unrecognized by any UN member.