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<p>[QUOTE=&quot;mrbrklyn, post: 446921, member: 4381&quot;]Do you understand what the concept of a limit is in calculus?&nbsp; Almost all natural processes have limits, and these processes approach the limit, but never reach the limit.&nbsp; This is how nature works, and as does processes work, processes like the striking of coins, or the grading of coins.</p><p><br /></p><p>When a scale is proposed, it is not necessary, nor is it practical to reach the upper limits of the scale, and the properties of the process, in this case the grading of coins, changes as you approach the upper limits.</p><p><br /></p><p>Ruben[/QUOTE]</p><p><br /></p>

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