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<p>[QUOTE=&quot;Insider, post: 5222870, member: 24314&quot;]The Eidolon, posted: &quot;Based on the 1797 penny, which I believe was the first official copper penny.&nbsp; If the 1797 was full-bodied, anything lighter could have been produced at a profit on the materials, whether official or contemporary counterfeit.&quot;</p><p><br /></p><p><img src="styles/default/xenforo/clear.png" class="mceSmilieSprite mceSmilie12" alt="o_O" unselectable="on" unselectable="on" /> <img src="styles/default/xenforo/clear.png" class="mceSmilieSprite mceSmilie15" alt=":arghh:" unselectable="on" unselectable="on" /><img src="styles/default/xenforo/clear.png" class="mceSmilieSprite mceSmilie15" alt=":arghh:" unselectable="on" unselectable="on" /> Well, with that kind of <img src="styles/default/xenforo/clear.png" class="mceSmilieSprite mceSmilie98" alt=":wacky:" unselectable="on" unselectable="on" /> thinking, I guess that every coin denomination from every country, in every era from the birth of coinage that exists which was officially minted by a government with a different weight standard from when it was first issued <b><span style="color: #b30000">IS AN OFFICIAL COUNTERFEI</span></b>!&nbsp;&nbsp; Unfortunately, you&#039;ll probably get lots of <img src="styles/default/xenforo/clear.png" class="mceSmilieSprite mceSmilie30" alt=":bucktooth:" unselectable="on" unselectable="on" /> agreement.</p><p><br /></p><p><br /></p><p><img src="styles/default/xenforo/clear.png" class="mceSmilieSprite mceSmilie14" alt=":angelic:" unselectable="on" unselectable="on" /> <span style="color: #660066">Thanks for this well thought out and interesting opinion:</span></p><p><br /></p><p>robp, posted: &quot;<b>The surfaces are pickled</b>. [<span style="color: #660066">With all due respect <img src="styles/default/xenforo/clear.png" class="mceSmilieSprite mceSmilie14" alt=":angelic:" unselectable="on" unselectable="on" />, this is <img src="styles/default/xenforo/clear.png" class="mceSmilieSprite mceSmilie14" alt=":angelic:" unselectable="on" unselectable="on" /> just not true. <img src="styles/default/xenforo/clear.png" class="mceSmilieSprite mceSmilie14" alt=":angelic:" unselectable="on" unselectable="on" /> Its surface has been <b>MECHANICALLY ALTERED</b> not chemically altered - pickled</span>.]&nbsp; It&#039;s been in an acidic environment that was probably quite wet for a period to allow continuous chemical attack. It looks like overall corrosion because the letters are thinner as well as the field damage. [<img src="styles/default/xenforo/clear.png" class="mceSmilieSprite mceSmilie14" alt=":angelic:" unselectable="on" unselectable="on" /> <span style="color: #660066">Corrosion does not look like this.&nbsp; <img src="styles/default/xenforo/clear.png" class="mceSmilieSprite mceSmilie14" alt=":angelic:" unselectable="on" unselectable="on" /> Perhaps you have another example of this type of corrosion.] </span>If you dissolve away a finite amount of metal, say 0.5mm off all surfaces, that means it not only comes off the field or high points of the relief facing the viewer, but the sides of that relief detail too. Consequently the letters will get thinner and thinner as more metal is removed. The A in the reverse legend looks to have suffered badly.</p><p><br /></p><p>I&#039;m further convinced this is the reason because it looks like there is a shadow depression beside the letters on the reverse. [<span style="color: #660066"><span style="color: #b30000"><b><i>BINGO</i></b></span>! It appears you have swerved into one of the obvious characteristics of a <b><font size="5">heavily whizzed coin</font></b></span>.]You often see this effect on environmentally damaged coins. [<img src="styles/default/xenforo/clear.png" class="mceSmilieSprite mceSmilie14" alt=":angelic:" unselectable="on" unselectable="on" /> <span style="color: #660066">Really, perhaps you have an example.&nbsp; I&#039;ll be the first to say I <img src="styles/default/xenforo/clear.png" class="mceSmilieSprite mceSmilie25" alt=":blackeye:" unselectable="on" unselectable="on" /><img src="styles/default/xenforo/clear.png" class="mceSmilieSprite mceSmilie30" alt=":bucktooth:" unselectable="on" unselectable="on" /> have a lot to learn.<img src="styles/default/xenforo/clear.png" class="mceSmilieSprite mceSmilie14" alt=":angelic:" unselectable="on" unselectable="on" />] </span>Although I&#039;ve not seen any papers on this, I think it is due to the creation of micro fissures in the metal fabric when the coin is struck because of metal flow in creating the relief detail. These in turn would allow the ingress of any corrosive substance leading to an area with deeper metal loss.&quot;[/QUOTE]</p><p><br /></p>

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