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<p>[QUOTE=&quot;mithril21, post: 3495254, member: 102153&quot;]Why wouldn&#039;t they verify the hardness of the die? It is a basic quality check that is quick, easy, and non-destructive and is correlated with the total die life. If the hardness is out of spec, either too hard/brittle or too soft, then you can have pre-mature die failure. I previously performed a failure analysis on a Mexican 20 centavos die that pre-maturely failed. I remember seeing the mint had already checked the hardness on the cancelled die face before submitting the die back for analysis. So I know at least the Mexican government has hardness specifications for their dies.</p><p><br /></p><p>But I&#039;m not sure who originally mentioned anything about the die or if you were responding to me or someone else. I was showing what the hardness indent looks like. The hardness is well within specification for the copper plating zinc planchet (62-72), so the indent would have been the same size on the planchet before it was struck. You can use your imagination as far as how the indent would have deformed under the striking pressure.[/QUOTE]</p><p><br /></p>

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