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Silver drachmas of Gupta Empire (possibly some rust?)
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<p>[QUOTE="John Anthony, post: 1975766, member: 42773"]I know nothing about the fineness of these coins, but they would have to have some iron in the alloy to rust. Rust is iron oxide, but sometimes the term gets used colloquially to mean tarnishing or toning. It's probably dirt. Soak them in distilled water and they might clean up.[/QUOTE]</p><p><br /></p>
[QUOTE="John Anthony, post: 1975766, member: 42773"]I know nothing about the fineness of these coins, but they would have to have some iron in the alloy to rust. Rust is iron oxide, but sometimes the term gets used colloquially to mean tarnishing or toning. It's probably dirt. Soak them in distilled water and they might clean up.[/QUOTE]
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Silver drachmas of Gupta Empire (possibly some rust?)
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