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<p>[QUOTE=&quot;GDJMSP, post: 1969379, member: 112&quot;]I&#039;ve never been able to pin down an exact date with my own research, but what I have found out is that the same mechanical method for polishing dies has been used since about the mid 1800&#039;s. And the technology for that method had existed for a couple hundred years prior to that. But I do know of a time when dies were not polished, at least not as we think of it. But that goes back to 1400. So, somewhere during that 400 years things changed.</p><p><br /></p><p>As to your coin Rusty, those are not die polish lines, but rather die scratches. And given their shape and design, in particular the ones under the horse, it&#039;s a pretty safe bet to assume they were caused by a mint worker using a rag to wipe dirt, debris, grease, off the die while it was it in use. And that is what scratched the die. Wiping a coin off with a rag is not the same as polishing it.</p><p><br /></p><p>Die polish lines, as we know them, have certain characteristics. They are always straight, they are always parallel, they never criss-cross each other, and they never cross the devices. So if you are looking at a coin and see raised lines on the surface, if those things are not all true then at least some of those lines are not die polish lines.</p><p><br /></p><p>But as I have explained many times it is extremely common to have die polish lines, die scratches, and coin scratches, all on the same coin and on top of each other. The mistake that people make is that they just lump them all together and call them all die polish lines - when they are not.[/QUOTE]</p><p><br /></p>

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