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<p>[QUOTE=&quot;Just Carl, post: 118899, member: 4552&quot;]True that those years were made from the spent shell casings and it was not propaganda. It wasa great and cheap sourse of copper that was not only available but something had to be done with the metals. there were naturally a lot of contaminates in this metal and not from gun powder either. That all vanishes with high temperatures at a foundry where the metals are melted. It just wasn&#039;t in a budget to purify the metals further so pennies it was. Many batches varied in types of impurities back in those days but not sufficiently enought to stop the process of making such a low denomination of coin. I don&#039;t think any one really knows for sure when the shell casings were all used up and normal procedures really began. It would take a chemist with a spectroscope to anylize for specific material contents. </p><p>&nbsp;&nbsp; Back to your question, the outside edge&nbsp; being different is probably due to the coins being encased in a tube of some sorts. This would mean less air got to the face or reverse compared to the edges. Therefore a different aging process for the edge which could mean a different color.</p><p>&nbsp; Then again maybe they were just buffed with Blue Coral Auto Wax.[/QUOTE]</p><p><br /></p>

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