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<p>[QUOTE=&quot;paddyman98, post: 3004305, member: 44615&quot;]I understand that there are 2 tests. One on a Die and the other on Planchets.</p><p>Here are quotes I want to share with you from the error-ref.com website -</p><p><br /></p><p>&quot;A Rockwell test mark will appear on a die face as a small pit.&nbsp; On a coin it will appear as a tiny dome-shaped or cone-shaped elevation.&nbsp; It is most likely to appear in the field.&nbsp; No unambiguous examples of Rockwell test-marked dies are known among U.S. coins.&nbsp; This is not surprising as a Rockwell test mark is very hard to distinguish from a small circular die dent.&quot;</p><p><br /></p><p>And</p><p><br /></p><p>&quot;When applied to a planchet, the Rockwell test mark will appear as a small circular pit with a smooth floor.&nbsp; Such planchets are supposed to be discarded.&nbsp; If a planchet with a Rockwell test mark is struck by coinage dies, the pit is not erased.&nbsp; The pit’s originally circular outline may, however, be distorted into a slight oval as the coin expands beneath the impact of the dies.&quot;[/QUOTE]</p><p><br /></p>

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