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<p>[QUOTE="Insider, post: 2663544, member: 24314"]<img src="styles/default/xenforo/clear.png" class="mceSmilieSprite mceSmilie11" alt=":rolleyes:" unselectable="on" unselectable="on" /> I'll answer for my wife who tried to <b>complement you</b> for actually answering the OP's question about measuring the THICKNESS of a coin. I think you gave a good answer. [USER=51347]@Alegandron[/USER].</p><p><br /></p><p>For coin authentication, I never measure the thickness of a coin's <span style="color: #5900b3">relief design</span> as it is unnecessary due to many variables. I do measure the thickness of its rims and the coin's diameter on a suspect coin. BTW, I measure the diameter in four slices - each 45 degrees. </p><p><br /></p><p>As for ancients, I <b><span style="color: #ff0000">never</span></b> bother to check the thickness or the diameter of an ancient coin as IMHO they are too irregular. We all know <span style="color: #5900b3">an ancient coin's weight can be very important. </span>I have read that Becker was not too careful about the weight tolerances of his fakes.</p><p><br /></p><p>As for specific gravity testing - IMHO, it is just as important for the authentication of ancients as the coin's weight. That's why IMHO <span style="color: #5900b3">it is relevant</span> (more so than thickness or diameter) to all our collections. It may save some unwanted surprises later. <img src="styles/default/xenforo/clear.png" class="mceSmilieSprite mceSmilie46" alt=":facepalm:" unselectable="on" unselectable="on" /></p><p><br /></p><p>Unfortunately, for us in this present day, the quality of many fake ancients matches anything we can discover by measurement including metallurgical testing. I'm sure all of you know that the great counterfeiters have been melting genuine coins for material to make their product for decades. An interesting, first hand account written in the late 1960's by Admiral Dodson, a very distinguished ANA member, describes his experiences with counterfeiters (Garyphallakis and Christodoulos) and illustrates many of their wares he purchased while visiting the "old country." Dodson provides evidence that the dies and many counterfeits were returned to the family when the Greek government lost a case in court. Sorry, I'm off tract. What I wish to say is even back then the "master counterfeiters" got the weights correct and used ancient metal from genuine coins to make their products. </p><p><br /></p><p>PS Thanks for the "heads-up" to the member who wrote about the NY firm selling "<i>Becker the Counterfeiter.</i>" <img src="styles/default/xenforo/clear.png" class="mceSmilieSprite mceSmilie50" alt=":happy:" unselectable="on" unselectable="on" />[/QUOTE]</p><p><br /></p>
[QUOTE="Insider, post: 2663544, member: 24314"]:rolleyes: I'll answer for my wife who tried to [B]complement you[/B] for actually answering the OP's question about measuring the THICKNESS of a coin. I think you gave a good answer. [USER=51347]@Alegandron[/USER]. For coin authentication, I never measure the thickness of a coin's [COLOR=#5900b3]relief design[/COLOR] as it is unnecessary due to many variables. I do measure the thickness of its rims and the coin's diameter on a suspect coin. BTW, I measure the diameter in four slices - each 45 degrees. As for ancients, I [B][COLOR=#ff0000]never[/COLOR][/B] bother to check the thickness or the diameter of an ancient coin as IMHO they are too irregular. We all know [COLOR=#5900b3]an ancient coin's weight can be very important. [/COLOR]I have read that Becker was not too careful about the weight tolerances of his fakes. As for specific gravity testing - IMHO, it is just as important for the authentication of ancients as the coin's weight. That's why IMHO [COLOR=#5900b3]it is relevant[/COLOR] (more so than thickness or diameter) to all our collections. It may save some unwanted surprises later. :facepalm: Unfortunately, for us in this present day, the quality of many fake ancients matches anything we can discover by measurement including metallurgical testing. I'm sure all of you know that the great counterfeiters have been melting genuine coins for material to make their product for decades. An interesting, first hand account written in the late 1960's by Admiral Dodson, a very distinguished ANA member, describes his experiences with counterfeiters (Garyphallakis and Christodoulos) and illustrates many of their wares he purchased while visiting the "old country." Dodson provides evidence that the dies and many counterfeits were returned to the family when the Greek government lost a case in court. Sorry, I'm off tract. What I wish to say is even back then the "master counterfeiters" got the weights correct and used ancient metal from genuine coins to make their products. PS Thanks for the "heads-up" to the member who wrote about the NY firm selling "[I]Becker the Counterfeiter.[/I]" :happy:[/QUOTE]
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