5 Shillings Cercocebus Atys

Somaliland declared independence from Somalia in 1991 but remains unrecognized by any United Nations member state, meaning its coinage has no legal tender status outside its own borders and circulates — to the extent it circulates at all — entirely within a diplomatically invisible economy. The sooty mangabey, Cercocebus atys, is native to West Africa, not the Horn of Africa, which makes its appearance on a Somaliland coin a collector-market decision rather than a natural history one.