I believe it is brass from just what I can see of the pic. Would need a much closer picture and one of the reverse side as well to make a true determination.
Its made of Aluminum Bronze these coins no longer have a value they have been demonitzed in mexico and now have only a slight value as a collector coin,, the coin in the picture is a well circulated example.
Mind telling us where this question orginated ? is this coin being advertised forsale as a gold coin ? By who ?
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