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<p>[QUOTE=&quot;desertgem, post: 3114957, member: 15199&quot;]The S mm punch is deterioration damage. As the main design dies of a coin can be worn by overuse, so can the mm punch, and it is much smaller. Sorry , there is no D under the S, it is just extra metal that wasn&#039;t pressed down because a small part of the die was missing.&nbsp; The dies for the coin and for any mint mark are opposite of the surface of the coin produced, So the raised section of the S is the deepest in the mm punch, the edges of the S are the shallow part which will break or chip off, leaving an area where metal will fill ( and produce a raised area of the finished coin )&nbsp; if you have seen the alphabetical punches used to stamp ID # into tools or other metal surfaces, they are the opposite of a mintmark die because they indent the letter. </p><p>Jim[/QUOTE]</p><p><br /></p>

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