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<p>[QUOTE=&quot;mikediamond, post: 334662, member: 1859&quot;]One should always distinguish between the &quot;proto-rim&quot; of the upset planchet and the &quot;design rim&quot; of the finished coin.&nbsp; Both are &quot;rims&quot;, but they are distinctly different from each other.&nbsp; The proto-rim assists in the formation of the design rim, but is not necessary for its development.&nbsp; The proto-rim is produced by rolling and squeezing in the upset mill.&nbsp; The design rim is produced by coin metal flowing into the rim gutter of the die face.[/QUOTE]</p><p><br /></p>

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