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<p>[QUOTE=&quot;mcarney1173, post: 641733, member: 18741&quot;]I&#039;ve been having fun recently with artificial toning methods.&nbsp; I read online that an oven can help speed up the process.&nbsp; I tried this with a few common coppers and 21st century nickels.&nbsp; I put the coins in the oven between two slabs of aluminum foil on 450 degrees for one hour.&nbsp; The result is pretty cool.&nbsp; Pennies tend to tone in their center.&nbsp; The entire coin fades, resulting in a tan penny with a neon blue center covering about half the coin on both sides.&nbsp; More valuable silvers, like a Walker I had gained a total rainbow tone on the entire coin.&nbsp; I don&#039;t plan to sell these, or slab them but just to keep them.&nbsp; <b>Anyone know any more artificial methods of any natural methods that speed up the process?</b>[/QUOTE]</p><p><br /></p>

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