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<p>[QUOTE=&quot;Kevin Mader, post: 7780355, member: 106826&quot;]At the start, the two kind of look alike.&nbsp; And it&#039;s fair to say, that with aging dies and setups coming loose as production occurs, you can have both.&nbsp; You&#039;ll often see members calling out one-or-the other, usually the more dominant effect in their eye.&nbsp; Die deterioration also occurs everywhere...but die abrasion/attrition is usually the most notable effect and that occurs around the circumference and affects the outer devices (usually distorted outer devices that begin to blend into the rim, thinning of letters/numbers).&nbsp; Dies that are in their very late die stage (VLDS) have such distortion in the outer devices that they appear to have shelves on both sides of a letter...or number.&nbsp; But that&#039;s also a clue.&nbsp; When you see effects occurring on both sides, it&#039;s a better chance that it&#039;s DD rather than MD.&nbsp; MD occurs on one side of a device.[/QUOTE]</p><p><br /></p>

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