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<p>[QUOTE=&quot;ToughCOINS, post: 2037635, member: 20480&quot;]Insufficient time-of-contact between dies and coin take place for significant heat transfer between the two.&nbsp; The dies and the press are incredibly large heat sinks, and absorb much more of the heat associated with each strike than do most of the planchets, until, of course, the day has been long, and the tooling and press have heated up a lot.</p><p><br /></p><p>The heat-treatment of the blanks does not take place immediately before striking.&nbsp; Typically, the planchets are annealed long before they even approach the presses.</p><p><br /></p><p>While the coins will indeed be warmer when ejected from the press, the dings you see on coins are from concentrated stress, imparted by edges and especially by reeding, whether impacted immediately after striking or long afterward.[/QUOTE]</p><p><br /></p>

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