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<p>[QUOTE="The Eidolon, post: 6813460, member: 102103"]And two more from Vietnam in the Nguyen Dynasty (1820-41)</p><p>Obverse: 明命通寶 (Minh Mang thong bao) </p><p>Reverse: Blank</p><p>Both are ~23 mm diameter. L is 2.76 g, R is 2.26 g</p><p><br /></p><p>In my foraging, Minh Mang has been the most common type of Vietnamese cast coin which I have seen in the US. I think I might have more kicking around, but these are the only two I have found in my collection so far.</p><p><br /></p><p>Apparently, Vietnam was not rich in domestic copper deposits, unlike Japan and China. So their coins are often alloyed with lead or zinc and have a lighter color. Numista has links for Minh Mang for 1 Cash/1 Van of <a href="https://en.numista.com/catalogue/pieces34092.html" target="_blank" class="externalLink ProxyLink" data-proxy-href="https://en.numista.com/catalogue/pieces34092.html" rel="nofollow">zinc</a>, <a href="https://en.numista.com/catalogue/pieces36427.html" target="_blank" class="externalLink ProxyLink" data-proxy-href="https://en.numista.com/catalogue/pieces36427.html" rel="nofollow">brass</a> and <a href="https://en.numista.com/catalogue/pieces64663.html" target="_blank" class="externalLink ProxyLink" data-proxy-href="https://en.numista.com/catalogue/pieces64663.html" rel="nofollow">copper</a>.</p><p>I imagine those are alloys rather than pure zinc or copper. (Brass is an alloy of Cu/Zn by definition.) Mine vary quite visibly in weight and thickness.</p><p><br /></p><p>Any good reference books or websites on Vietnamese cast coins to recommend?</p><p>[ATTACH=full]1272250[/ATTACH] [ATTACH=full]1272251[/ATTACH][/QUOTE]</p><p><br /></p>
[QUOTE="The Eidolon, post: 6813460, member: 102103"]And two more from Vietnam in the Nguyen Dynasty (1820-41) Obverse: 明命通寶 (Minh Mang thong bao) Reverse: Blank Both are ~23 mm diameter. L is 2.76 g, R is 2.26 g In my foraging, Minh Mang has been the most common type of Vietnamese cast coin which I have seen in the US. I think I might have more kicking around, but these are the only two I have found in my collection so far. Apparently, Vietnam was not rich in domestic copper deposits, unlike Japan and China. So their coins are often alloyed with lead or zinc and have a lighter color. Numista has links for Minh Mang for 1 Cash/1 Van of [URL='https://en.numista.com/catalogue/pieces34092.html']zinc[/URL], [URL='https://en.numista.com/catalogue/pieces36427.html']brass[/URL] and [URL='https://en.numista.com/catalogue/pieces64663.html']copper[/URL]. I imagine those are alloys rather than pure zinc or copper. (Brass is an alloy of Cu/Zn by definition.) Mine vary quite visibly in weight and thickness. Any good reference books or websites on Vietnamese cast coins to recommend? [ATTACH=full]1272250[/ATTACH] [ATTACH=full]1272251[/ATTACH][/QUOTE]
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Some non-Qing Dynasty copper cash (China/Japan/Vietnam etc.)
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