Bronze keris are known.
I have seen a photographed a bronze Keris Buda; I've read somewhere --- I had thought Quaritch Wales but I cannot find it in that --- that in Hindu blood sacrifice, bronze was preferred to iron, so this bronze KB was possibly a weapon used for sacrifice.
I also have a Modern Keris --- ie, current keris form --- in bronze.
I've never seen a true keris in any metal other than these two.
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