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<p>[QUOTE=&quot;dougsmit, post: 2325195, member: 19463&quot;]When flans are cast there would be a tendency for a scale to form on the surface that should be cleaned off to give a clean strike.&nbsp; There must have been several ways to do this but some mints used files.&nbsp; The marks would disappear if the strike were heavy enough but usually there is a trace at least.&nbsp; Most of us will pay more for coins without such marks but they are not fault as much as they are facts of numismatic life.</p><p><br /></p><p>I would like to know how other mints accomplished the same thing (chemically???).[/QUOTE]</p><p><br /></p>

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