Some duplicate silver

I have these six silver coins that are duplicates.  Starting top left to right.

Mexico 1950 25 Centavos
Greece 1964 30 Drachmai
Japanese 1932 50 Sen
Great Britain 1942 6 Pence
Canada 1901 5 cent
Netherlands East Indies 1941 1/4 Gulden





I am not in a hurry to trade and am just putting them out there to see what people may have.   

Thanks.

I have lots of silver swap coins.  I would only be interested in the Netherland East Indies and Japanese coins.
Greg