Hi.
I have many nickels from Argentina between 1915 and 1942 to exchange. Preferably for copper cents with the face of George V and George VI or by Japan's Sens copper.
I am in Argentina, sent by certified mail practically anywhere in the world.
Regards
https://en.numista.com/catalogue/pieces3240.html
https://en.numista.com/catalogue/pieces2594.html
https://en.numista.com/catalogue/pieces3252.html