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<p>[QUOTE=&quot;johnmilton, post: 26373490, member: 101855&quot;]There are some dates of large cents that were struck in convex / concave planchet, but that was in 1796. The mint had started to buy copper planchets from abroad. One of the suppliers sent crummy copper with convex planchets. The mint attempted to flatten them, but it didn’t always work. </p><p><br /></p><p>Ultimately the mint started buying planchets from Bolton and Watt. In almost all cases, the mint received quality for many years after that. </p><p><br /></p><p>I don’t think that any 1805 cents were struck on concave planchets.[/QUOTE]</p><p><br /></p>

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