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<p>[QUOTE=&quot;John Anthony, post: 2409530, member: 42773&quot;]Ancient minters discovered that metal flowed better into the dies if the anvil die (typically the obverse die) was concave, and the moveable (typically reverse) die was convex. Also, the flan was better held in place during striking by a concave die. So yes, frequently ancient coins have this sort of shape, particularly in the case of larger silver coins.[/QUOTE]</p><p><br /></p>

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