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<p>[QUOTE=&quot;Insider, post: 5132025, member: 24314&quot;]Since you did not post a timely reply I went searching for myself and found this quote in a Coin World article by Mike Diamond a respected error authority.&nbsp; Apparently, we all seem to be in agreement EXCEPT when the effect occurs AND IMHO it does not happen in the upsetting process.</p><p><br /></p><p><b><span style="color: rgb(179, 0, 0)">This part</span></b> of Mike&#039;s article makes no sense at all:&nbsp; &quot;During upsetting — when a blank is rolled and squeezed into a planchet — the latter’s proto-rim can only form when there’s resistance at the opposite pole. Any interruption in the blank’s circular outline will briefly eliminate that resistance, preventing formation of the proto-rim. [<span style="color: rgb(0, 102, 0)">ALL OBVIOUSLY TRUE <img src="styles/default/xenforo/clear.png" class="mceSmilieSprite mceSmilie8" alt=":D" unselectable="on" unselectable="on" /></span>] <span style="color: rgb(179, 0, 0)">The planchet also <i><b>bulges out</b></i> in this area [<img src="styles/default/xenforo/clear.png" class="mceSmilieSprite mceSmilie12" alt="o_O" unselectable="on" unselectable="on" /> <span style="color: rgb(179, 0, 179)"><b>?<font size="5">?</font></b><font size="6"><b>? </b><font size="4">Certainty <b>not</b> in the upsetting process as it is squeezed tightly to make the raised planchet.&nbsp; Therefore, the effect <b>must occur</b> <img src="styles/default/xenforo/clear.png" class="mceSmilieSprite mceSmilie12" alt="o_O" unselectable="on" unselectable="on" /> during striking the planchet.] </font></font></span></span>creating a tight fit with the collar. As a consequence, the design rim fails to strike up properly while the edge is especially well-struck.&quot;</p><p><br /></p><p>Finally, it appears that I&#039;m mistaken about what &quot;Blakesley&quot; actually discovered.&nbsp; Rather than naming the characteristic for what it looks like on the struck coin, the error guys have named it for its cause - an incompletely formed planchet.&nbsp; All this makes no sense to me.&nbsp; I seem to be reading that the term refers to BOTH what it looks like and how it was made. <img src="styles/default/xenforo/clear.png" class="mceSmilieSprite mceSmilie5" alt=":confused:" unselectable="on" unselectable="on" /> Nevertheless, I&#039;ll go with the error guys as it is their game and they make the rules.&nbsp; Thanks for your reply! <img src="styles/default/xenforo/clear.png" class="mceSmilieSprite mceSmilie50" alt=":happy:" unselectable="on" unselectable="on" />[/QUOTE]</p><p><br /></p>

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