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<p>[QUOTE=&quot;mark_h, post: 974852, member: 3726&quot;]All of your physics note one solid push against another solid. No where does that forumla take into account a partial strike.&nbsp; You have 1/2 of the die(solid) striking 1/2 of the coin(solid). The other half of the die is striking empty space, which allows the metal to flow outward and move. The high heel is not the same example. In the case of the high heel you are reducing the size of the area, but not what it is striking(still solid).&nbsp; Think like this - you walking on a 1 foot high side walk nothing on the sides, each step is consistent.&nbsp; So your forumla works.&nbsp; Now put 1/3 of step on the side walk and 2/3 over the edge - what happens?&nbsp; You did not change the pressure of you step they are still consistent - but your ankle now rolls and off the side walk you go.&nbsp; So in the case of a coin not all of it is struck - not totally solid versus solid as the formula suggests. I just don&#039;t think it takes into account all the variables. So in my mind did the planchet move when first struck?&nbsp; What did the metal flow do?&nbsp; Not all off center strikes are well struck examples over the complete surface - or you would have complete rims. Were the dies worn? Were they lose?&nbsp; All of that will play into the strike on the coin.</p><p><br /></p><p>Now having said all that I do not dispute that weak struck coins or coins in general cannot have planchet flaws which Doug disputes. To me it is still how to tell the difference on some coins and if they should be ignored or not.&nbsp; Still neither side has won me over - yet. <img src="styles/default/xenforo/clear.png" class="mceSmilieSprite mceSmilie1" alt=":)" unselectable="on" unselectable="on" />[/QUOTE]</p><p><br /></p>

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