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<p>[QUOTE=&quot;usmc60, post: 2415303, member: 76739&quot;]Okay ed less take this one step further. Under further examination the MRH 150 high-speed press that the mint uses for circulated coins is considered a hydraulic press, the RAM arm is controlled by a liquid not a grease it is a self lubricating piston. The only possible means of contamination to the die can only come from the blank wash residue which the blanks are clean prior to going to the pressing process. And I&#039;m sure you have noticed on a lot of coins that come directly from the mint residue spots on the metal that are not clean thoroughly in the rinsing process. I will say under the old mint teen process it is possible for grease contamination but highly unlikely in today&#039;s Manning process. I guess his old Marine&nbsp; sees things a little different than others. Please take a look at this 150 high-speed press .<img src="styles/default/xenforo/clear.png" class="mceSmilieSprite mceSmilie99" alt=":watching:" unselectable="on" unselectable="on" /><img src="styles/default/xenforo/clear.png" class="mceSmilieSprite mceSmilie24" alt=":blackalien:" unselectable="on" unselectable="on" />[ATTACH=full]499748[/ATTACH][/QUOTE]</p><p><br /></p>

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