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<p>[QUOTE="Silverlock, post: 3246267, member: 98181"]This is just a guess, but lead oxidizes white. Ptolemeic bronzes can have high lead content, 30% or more, and sometimes the mixture of white from the lead and green from the copper can look like that surface. I don't know the lead content of Seleucid bronzes to know if that's a possibility for this coin, though.[/QUOTE]</p><p><br /></p>
[QUOTE="Silverlock, post: 3246267, member: 98181"]This is just a guess, but lead oxidizes white. Ptolemeic bronzes can have high lead content, 30% or more, and sometimes the mixture of white from the lead and green from the copper can look like that surface. I don't know the lead content of Seleucid bronzes to know if that's a possibility for this coin, though.[/QUOTE]
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What caused this rough surface?
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