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<p>[QUOTE=&quot;cubenewb, post: 1068986, member: 25644&quot;]Just some food for thought...</p><p>&nbsp;</p><p>&nbsp;My initial impression was acid dipping also, but if the weight is in fact 3.1 grams, things just don&#039;t seem to be adding up. Clad quarters are 91.67% copper and 8.33% nickel, distributed in two components, one being a .75/.25 copper.nickel outer layer engulfing a pure copper core and the other being the core. I was unable to find the exact mass of the inner core, that would be a useful piece of information. Anyhow, with a penny planchet from 1967 weighing 3.11 grams, it seems plausible that it was struck on a penny planchet. It is also perfectly plausible that a clad quarter was dipped until it was the correct weight, but I think this could use some reconsideration. The weak reeding could be attributed to acid dip reducing the size of the &#039;mountains&#039; whilst maintaining the size of the &#039;valleys,&#039; but couldn&#039;t the reeding be reduced by a copper penny planchet, upon being struck, barely stretching out to the collar and thus producing weak reeds? What about the apparent off-centering that is present; wouldn&#039;t this be an indicator of a haphazard stretching of the penny planchet exploding outwards into the quarter collar after being struck? </p><p><br /></p><p>My guess if it&#039;s not struck on a copper planchet: Acid dipped until the correct weight, then smashed with a hammer to produce the big ole dent and the warping of the circular shape.</p><p><br /></p><p><br /></p><p>&nbsp;</p><p>Are you sure thickness/clarity are 100% distinctive indicators? Here are two acid dippers, the first with an fairly thick planchet and the second with some degree of distortion.</p><p><img src="http://www.coingalaxy.com/coininfo/acid-dipped-clad.jpg" class="bbCodeImage wysiwygImage" alt="" unselectable="on" /></p><p><br /></p><p><br /></p><p><img src="http://www.coingalaxy.com/coininfo/acid-dipped-stateqtr.jpg" class="bbCodeImage wysiwygImage" alt="" unselectable="on" /></p><p><br /></p><p><a href="http://www.cointalk.com/t143074/" class="internalLink ProxyLink" data-proxy-href="http://www.cointalk.com/t143074/">And by the looks of Collect89&#039;s variety of this error</a>, the strike can be very, VERY crisp.[/QUOTE]</p><p><br /></p>

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