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<p>[QUOTE=&quot;The Eidolon, post: 7513038, member: 102103&quot;]Even though &quot;copper&quot; coins can never be perfectly pure metal, they do seem to be softer and redder than coins deliberately alloyed with enough tin to be called bronzes.&nbsp; Old bronzes usually look browner in color than purer copper coins.</p><p>A couple Russian/Soviet 5 kopecks (1858, 1924) to show some nice big coppers.</p><p>[ATTACH=full]1297996[/ATTACH] [ATTACH=full]1297997[/ATTACH] </p><p><br /></p><p>Asian coins are a bit more complicated.&nbsp; They were made of a crazy mix of elements, including coper alloyed with lead, zinc, tin, and antimony.&nbsp; The composition would vary from province to province depending on the quality of the copper source available and how much other metals would be used to reduce costs.&nbsp; I think these tend to be called &quot;copper&quot; in general without reference to which specific alloy composition was used, which is hard to tell non-destructively.</p><p><br /></p><p>Some Northern Song Dynasty coppers: (1101-1117)</p><p>[ATTACH=full]1298007[/ATTACH] [ATTACH=full]1298008[/ATTACH][/QUOTE]</p><p><br /></p>

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