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<p>[QUOTE=&quot;GDJMSP, post: 1327467, member: 112&quot;]It&#039;s not just seen on copper. It&#039;s seen on coins of all metals. And no, it&#039;s not from your fingers. Anything that might be on your fingers is washed off the first time you dip your fingers into the first bowl/container of acetone. And since you use, or should use, 3 bowls of acetone there is nothing left on your fingers by the time you do the last acetone rinse.</p><p><br /></p><p>The acetone creates the whitish cast on coins because the acetone completely dehydrates the coin. It removes all traces of moisture, so the coins do not look normal. Normally a coin, any coin, will have small traces of moisture on it just from the air. And when you remove that it makes the coin look weird. And the best way I can describe that weird look is as a whitish cast.</p><p><br /></p><p>edit - I suggest you use your fingers because you have the best dexterity with your fingers - less chance of dropping or fumbling the coin. It&#039;s just like wearing gloves. No professional wears gloves to handle a coin for the same reason.[/QUOTE]</p><p><br /></p>

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