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Is it true that cleaning a coin removes a surface film?
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<p>[QUOTE="Insider, post: 7684058, member: 24314"]Jim,</p><p><br /></p><p>Thanks for making that correction! I agree. Original Mint luster is NOT a film of any type.</p><p><br /></p><p>A "film" implies a coating of some type. I have never heard this word used in numismatics except to describe that effect. Early stages of oxidation can be described as a natural "film" that occurs to metal.</p><p><br /></p><p>What you have shown are die radials. They give BU coins the cartwheel.[/QUOTE]</p><p><br /></p>
[QUOTE="Insider, post: 7684058, member: 24314"]Jim, Thanks for making that correction! I agree. Original Mint luster is NOT a film of any type. A "film" implies a coating of some type. I have never heard this word used in numismatics except to describe that effect. Early stages of oxidation can be described as a natural "film" that occurs to metal. What you have shown are die radials. They give BU coins the cartwheel.[/QUOTE]
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