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Cleaning Coins --- Just when does it start to hurt?
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<p>[QUOTE="pondman, post: 761927, member: 21898"]A well designed coin, should be lustrous. The metal has bonded in geometric formations. Therefore when you spin a uncirculated morgan you'll see the cartwheels. Magnify it and you will see these peak and ridge formations.</p><p> </p><p>When you soak a coin in acid or abraid it, you are only removing the corrosion, but you are also degrading the geometric formation, you flatten it. Cleaning will never improve or restore luster. It may look shiny, because you removed corrosion and dirt. But you've changed the surface.[/QUOTE]</p><p><br /></p>
[QUOTE="pondman, post: 761927, member: 21898"]A well designed coin, should be lustrous. The metal has bonded in geometric formations. Therefore when you spin a uncirculated morgan you'll see the cartwheels. Magnify it and you will see these peak and ridge formations. When you soak a coin in acid or abraid it, you are only removing the corrosion, but you are also degrading the geometric formation, you flatten it. Cleaning will never improve or restore luster. It may look shiny, because you removed corrosion and dirt. But you've changed the surface.[/QUOTE]
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