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<p>[QUOTE="huntsman53, post: 334019, member: 1242"]I will dig out some of my Proof Cents and if I still have any with this strong effect, I will take a picture of them and post them here! If I do not have any, I can purchase some from a local Coin Dealer that I know.</p><p><br /></p><p>I don't understand what you mean by saying, "the lubricant responsible for "grease strikes" is smooth and viscous and imparts no texture of its own"!!?? It doesn't matter what type of lubricant it is and that it is smooth and viscous. When the lubricant is between two objects and is forced across their' surfaces with great force as in the minting process, it will spread across the surfaces and generally be forced out from between them. Under these types of pressure, the grease or lubricant will not only move at high speeds but also heat to fairly high temperatures. This speed, heat as well as the forcing of the grease across the surface of a planchet and especially away from design elements, must effect the planchet in some manner other than obliterating Lettering, Numbers or even design elements.</p><p><br /></p><p><br /></p><p>Frank[/QUOTE]</p><p><br /></p>
[QUOTE="huntsman53, post: 334019, member: 1242"]I will dig out some of my Proof Cents and if I still have any with this strong effect, I will take a picture of them and post them here! If I do not have any, I can purchase some from a local Coin Dealer that I know. I don't understand what you mean by saying, "the lubricant responsible for "grease strikes" is smooth and viscous and imparts no texture of its own"!!?? It doesn't matter what type of lubricant it is and that it is smooth and viscous. When the lubricant is between two objects and is forced across their' surfaces with great force as in the minting process, it will spread across the surfaces and generally be forced out from between them. Under these types of pressure, the grease or lubricant will not only move at high speeds but also heat to fairly high temperatures. This speed, heat as well as the forcing of the grease across the surface of a planchet and especially away from design elements, must effect the planchet in some manner other than obliterating Lettering, Numbers or even design elements. Frank[/QUOTE]
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