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<p>[QUOTE=&quot;Hommer, post: 2106742, member: 73266&quot;][USER=36864]@Kirkuleez[/USER]&nbsp; Die polish lines are viods In the die the same as the letters and devices. Metal flow will actually follow these lines because it is a path of least resistance. In doing so, the friction produced will erode the die along those lines,&nbsp; making them more pronounced on later struck coins. Thus the need for repolishing. Everyone has seen a late die state coin in which these polish lines are almost exaggerated.&nbsp; In some cases, it is my believe,&nbsp; that alot of these lines aren&#039;t actually polish lines, but lines left from the hubbing process that weren&#039;t completely removed in the polishing process.</p><p>Edit to add: Ever put a coin on a train track and after the train hit it picked it up? There is a tremendous amount of concentrated energy in the coining process that is converted to heat[/QUOTE]</p><p><br /></p>

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