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<p>[QUOTE=&quot;kanga, post: 367063, member: 9270&quot;]First, I think much of the change in toning and marks are from a different lighting angle and/or exposure setting.</p><p>&nbsp;</p><p>Second, the now hazy areas are where there used to be &quot;gunk.&quot;</p><p>The gunk has been removed BUT damage to the coin&#039;s sufaces had already occurred.</p><p>I see this as an excellent example of the difference between <u>cleaning</u> and <u>conserving</u>.</p><p>This coin has been <u>conserved</u>. The foreign gunk has been removed BUT changes in the coin&#039;s metal caused by the gunk remain.</p><p>A <u>cleaned</u> coin would have had the hazy areas removed too (or at least attempted.)[/QUOTE]</p><p><br /></p>

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