There are many examples of old (over 100 years old) coinage used in very small places for example islands. Have these been used in the place they were made for or somewhere else, or maybe not used at all? I think most have been used.
Saint Helena: https://en.numista.com/catalogue/pieces18419.html
Greenland: Thule kap york coins and the Greenland mining coins https://en.numista.com/catalogue/groenland-1.html
Antigua and Barbuda: https://en.numista.com/catalogue/pieces33215.html
Curacao: https://en.numista.com/catalogue/curacao-1.html
Cocos Keeling: https://en.numista.com/catalogue/cocos-1.html
There are many more, like St. Helena and Ascension, but for example that is not on Numista. There are also many examples that are on Numista. These are, maybe the most common uncommon ones.





