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Die Breakdown. What causes the marks you see on coins?
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<p>[QUOTE="GDJMSP, post: 1930897, member: 112"]Yeah, and I noticed the captions for your pictures referring to Proof coins, and only Proof coins, and about how, if needed, they are "touched up" by hand. I read all the articles found here - <a href="http://www.coinnews.net/tools/search-coinnews/?cx=partner-pub-0374335159561115%3Anqgjuaeovxn&cof=FORID%3A10&ie=ISO-8859-1&q=die+polishing&sa=Search&siteurl=www.coinnews.net%2F&ref=&ss=6563j8989433j17" target="_blank" class="externalLink ProxyLink" data-proxy-href="http://www.coinnews.net/tools/search-coinnews/?cx=partner-pub-0374335159561115%3Anqgjuaeovxn&cof=FORID%3A10&ie=ISO-8859-1&q=die+polishing&sa=Search&siteurl=www.coinnews.net%2F&ref=&ss=6563j8989433j17" rel="nofollow">http://www.coinnews.net/tools/search-coinnews/?cx=partner-pub-0374335159561115:nqgjuaeovxn&cof=FORID:10&ie=ISO-8859-1&q=die+polishing&sa=Search&siteurl=www.coinnews.net/&ref=&ss=6563j8989433j17</a></p><p><br /></p><p>If you'll read them all you'll find that all the die blanks are polished by machine and the special collector coins and Proofs are touched up by hand when needed. You'll also find that most of these processes are new.</p><p><br /></p><p>The old die polishing machines worked pretty much just like the machine in the video I posted. As I have reported many times before my source for this information was a copy of <i>The Numismatist</i> published by the ANA in 1915. They used the same varying grades of diamond dust paste to polish dies back in the 1800's that they use today. And it was done by a machine just like it is done today.</p><p><br /></p><p>The end result is, neither the old or the new allow die polish lines to criss-cross because of the nature of the method.[/QUOTE]</p><p><br /></p>
[QUOTE="GDJMSP, post: 1930897, member: 112"]Yeah, and I noticed the captions for your pictures referring to Proof coins, and only Proof coins, and about how, if needed, they are "touched up" by hand. I read all the articles found here - [url]http://www.coinnews.net/tools/search-coinnews/?cx=partner-pub-0374335159561115%3Anqgjuaeovxn&cof=FORID%3A10&ie=ISO-8859-1&q=die+polishing&sa=Search&siteurl=www.coinnews.net%2F&ref=&ss=6563j8989433j17[/url] If you'll read them all you'll find that all the die blanks are polished by machine and the special collector coins and Proofs are touched up by hand when needed. You'll also find that most of these processes are new. The old die polishing machines worked pretty much just like the machine in the video I posted. As I have reported many times before my source for this information was a copy of [I]The Numismatist[/I] published by the ANA in 1915. They used the same varying grades of diamond dust paste to polish dies back in the 1800's that they use today. And it was done by a machine just like it is done today. The end result is, neither the old or the new allow die polish lines to criss-cross because of the nature of the method.[/QUOTE]
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