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<p>[QUOTE=&quot;physics-fan3.14, post: 8647930, member: 19165&quot;]The way that area seems to be shinier than the surrounding area seems to indicate some sort of damage. It could be a wheel mark, but those don&#039;t tend to be quite so large (or shiny). </p><p><br /></p><p>I&#039;m more inclined to think there was a spot and somebody took a jewelers rag and just wiped a spot (think of how you would polish a silver spoon, with a special cloth and make it shiny). The jeweler&#039;s cloth is impregnated with a fine powder called jewelers rouge that helps it shine and polish - and it leaves fine lines like you show.[/QUOTE]</p><p><br /></p>

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