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<p>[QUOTE=&quot;Colonialjohn, post: 2618636, member: 57741&quot;]In terms of the Newman piece there is some form of plate peeling off the coin as you can see different discolorations which IMO is silver and copper areas. Gurney and myself have concluded that in and around 1840 is the starting point for electrodeposition so this 1821 issue is an enigma but we do conclude there may be several Portrait 8Reales which have silver electrodeposition. I am tempted to break it out of the slab and XRF analyze the surface and maybe even do SEM microgrpahs (i.e., magnification shots) of the surface. But I see no point. It&#039;s not going to tell me anything new. Its a very DIFFERENT looking piece. Silver electrodeposition simply is a technology to put silver on a copper surface more easily than Sheffield plating. There are many advantages if one does research this technology. I supply a whole chapter in my upcoming book.</p><p>In terms of NGC having different opinions I can see where the later lower silver content Chinese CLASS II issues will always be somewhat controversial. In some ways we put out this information and perhaps future collectors can supply more data - although I know Gurney is convinced and has volumes of information to support this class of counterfeit. Who can argue about a Class I type? I doubt however that any reservations NGC does have that they will go toe to toe with Gurney. Just saying ... IMO.</p><p>In my new book I also include some basic information on Chinese counterfeits. I believe after reading my book which has over 1,000 coins fully XRF&#039;d of many different types (U.S. Colonial &amp; Foreign types mostly of a European nature from 1500-1850) many questions will be answered and less confusing posts will be posted as seen here ... IMO.</p><p><br /></p><p>John Lorenzo</p><p>United States[/QUOTE]</p><p><br /></p>

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