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<p>[QUOTE=&quot;usmc60, post: 2692826, member: 76739&quot;]Follow-up. Little more research on the Internet. Basically the only ones I found using grease fill die as a statement is on all the talk forums. Here&#039;s one from NGC</p><p>&nbsp;&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; NGC&nbsp; </p><p>&nbsp;&nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; Dropped Letters (The Un-filled Die)&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; </p><p>&nbsp;&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; It is a normal occurrence in the process of minting coins that, over time, some part of the dies may become either partially or fully clogged with debris. The most common form of this debris is a combination of metallic fillings and grease or oil which I will call &quot;metallic dirt.&quot; (PHOTO #1) Metallic dirt will become imbedded in the recesses of the dies resulting in a coin struck with incomplete detail, missing portions of the design elements. (PHOTO #2) Because of the speed at which the presses operate (at 750 coins per minute), many coins can be struck with this obstruction before this situation is corrected. At some point, an inspector will notice the filled die flaw, stop the presses, and remove the build up. (PHOTO&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; </p><p>USMC60 PS I can only assume you&#039;re having a problem with someone using the term metallic dirt.[/QUOTE]</p><p><br /></p>

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