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<p>[QUOTE=&quot;bhp3rd, post: 499397, member: 16510&quot;]<b>Also a rocking motion is needed.</b></p><p><br /></p><p>One thing that has not been mentioned yet is that a rocking type of motion is needed to set the mintmark.</p><p>I think in Margolis and Wexler&#039;s books they describe that because the die is slightly convex (I think that&#039;s the right word), (rounded) and tapered slightly they must not only strike the mintmark punch they must use a rocking motion as they hit the punch to adequately set the mintmark properly. As I understand it if the punch was struck just flat out the tops and bottoms of the minmark would be rather weak only the center would be seated properly. Remember not only this but they are working in a negative image hitting a small metal rod (die) , slightly cone shaped with a smaller rod (the punch itself) and they did this each week to hundreds if not thousands of dies. It is no wonder their were re-punched, filled, flat, fat, thin, blobs, wide, narrow and everything else in the book as the finished product die with mintmark. Hint, the Wexler files has well over 250 different RPM&#039;s for 1960-D Lincoln cents. It&#039;s really amazing there were not many more blunders than there were.</p><p>Ben Peters</p><p>&quot;getting old is not all it&#039;s cracked up to be&quot;[/QUOTE]</p><p><br /></p>

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