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<p>[QUOTE=&quot;ToughCOINS, post: 2991840, member: 20480&quot;]The Rockwell test is not performed on coins - only on dies.&nbsp; </p><p><br /></p><p>Its purpose is to determine that the dies have reached sufficient hardness after heat treatment to endure the expected number of strikes of coinage without unacceptable degradation.</p><p><br /></p><p>Therefore, you should be looking for a shallow, almost perfectly round indentation in a flat surface of the coin.&nbsp; The test would not be performed on an inclined surface, as the test would yield invalid results.[/QUOTE]</p><p><br /></p>

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