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<p>[QUOTE=&quot;tommyc03, post: 2579989, member: 17665&quot;]Actually Jim, I would very much doubt that Philly polishes their dies all that much. ( maybe early on ) This would normally result in some minor or major details fading. ( such as the 1969 Lincoln Cent &quot;Floating Roof&quot;. ) Die fatigue is what causes the striations, simple overuse of a die, rather than take it out of production before something worse happens, and it usually does. You will find on most Philly quarters, an enormous amount of die chips and cracks on these coins because of a lack of quality control. Very much the other way with Denver &amp; San Francisco which almost always have better strikes and very few errors. The exception of which is usually minor cracks at the base of the bust. I also tend to believe that they do not even take great care of their machinery as evidenced by all of the grease they use, causing grease filled errors with missing details.[/QUOTE]</p><p><br /></p>

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