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<p>[QUOTE=&quot;gxseries, post: 2253446, member: 4373&quot;]I was really tempted to put that in as well but I thought carefully before adding that it. If I am not mistaken, it was only quite recent that mints contracted suppliers for their planchets. I&#039;m certain that even in the early 1900s, mints would procure all materials and did everything in house, from smelting to producing metal sheets. I remember someone posting a video of the US mint and it did feature the smelting process. </p><p><br /></p><p>As of when it was more economically viable to procure planchets from external suppliers - that&#039;s another field worthy to be researched. I&#039;m sure this also varies from various world mints. I suspect it would be around 1970s when global economy hit everyone&#039;s pockets and mints were forced to find ways to cut costs.[/QUOTE]</p><p><br /></p>

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