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<p>[QUOTE=&quot;maridvnvm, post: 2330932, member: 31620&quot;]I have been browsing through my coins of Sepimius Severus to see if I couldfind any obverse circle guides. Out of about 450 coins I have six coins showing remains of the circle guide on the obverse with about 20 showing some on the reverse.</p><p><br /></p><p>Here is what I think is my best example of several facets at once. Obverse guide at 3 o&#039;clock and 7 to 9 o&#039;clock. Reverse guide at 11 to 2 o&#039;clock and at 7 o&#039;clock. In letter marks are also visible on the C at 7 o&#039;clock on the obverse for example. Both images can be clicked to enlarge them.</p><p><br /></p><p>[ATTACH=full]472541[/ATTACH]</p><p>[ATTACH=full]472542[/ATTACH]</p><p><br /></p><p>Now comes the discussion about why they should occur less on the obverse than the reverse. Here are my thoughts.</p><p><br /></p><p>We know that an obverse die is used with multiple reverse dies. I would suggest that the obverse die lasts longer than the reverse die due to the mechanics of the striking process. I we accept that these fine details are lost after repeated strikes then you end up with a scenario where you can have guide circles occuring much more scarcely than we see them on reverses and why coins without any marks are predominant.</p><p><br /></p><p>As such a coin with circle marks on both sides would be one where both dies are fresh and thus would occur much less frequently.</p><p><br /></p><p>Thoughts?</p><p>Martin[/QUOTE]</p><p><br /></p>

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