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<p>[QUOTE=&quot;eddiespin, post: 3011146, member: 4920&quot;]As coins are minted &quot;flow lines&quot; begin to appear from the heating of the dies as they lift off the planchets. Those are most visible in planchets struck on older dies that are deteriorating, and the coins will sparkle like a diamond for it. When you don&#039;t see that, which is a &quot;cartwheel&quot; reflection, it&#039;s a sign the lines were disturbed by a harsh rub or cleaning. The surface will appear flat for it, lusterless, dead. There&#039;s the first thing that goes, the flow lines. A polish or buffing will not replace those flow lines, as they were caused by the hot dies lifting off the planchets. As such, you clean a coin, you just did irreversible damage to it. It&#039;s all in the reflection, how the coins reflect the light.[/QUOTE]</p><p><br /></p>

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