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<p>[QUOTE=&quot;Hobo, post: 611912, member: 11521&quot;]Good job, GCL. If I didn&#039;t know better I would have thought you copied from the mini-course on counterfeit detection I am putting together to present at ANA Summer Seminar in 3 weeks. You certainly covered the important topics. </p><p>&nbsp;</p><p>I did not quite follow you here:</p><p>&nbsp;</p><p><br /></p><p>&nbsp;</p><p>I think you are confusing one-to-one transfer dies and impact dies. With one-to-one transfer dies the host coin is not sacrificed. It is traced on a Janvier machine (or similar device) and copied onto a piece of hub stock. </p><p>&nbsp;</p><p>With impact dies the host coin is sacrificed. The host coin is driven into the die stock (or vice versa) which destroys the host coin. </p><p>&nbsp;</p><p>I&#039;m not sure what you mean by, &quot;Because the genuine coin used will have contact marks, the metal flows into the planchet creating what is known as depressions on the counterfeit coin.&quot; I think what you are trying to say is the contact marks on the host coin are copied onto the counterfeit die and when the counterfeit die is used to strike a countefeit coin the contact mark is recreated on the counterfeit coin as a repeating depression. (It is called a repeating depression because it is a depression in the counterfeit coin and it is repeated on every coin struck by the counterfeit die.) And the repeating depression will have luster because of metal flow whereas a genuine contact mark will not have luster but rather would be raw metal. </p><p>&nbsp;</p><p>Otherwise, very good job. I think you have a very good handle on the subject.[/QUOTE]</p><p><br /></p>

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