The microgram of my another Keris, it's kept well. From some Keris articles, we can see the white part is aerosiderite, and the black part is commonly iron( I believe there is something cover the iron). If kerises are not kept well, the superstratum on the commonly iron will be shell off, the superposition of materials on the blade will appear(we can easily see it), like my keris. Is it right? Thanks!
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