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<p>[QUOTE="Bakersgma, post: 9047, member: 59"]You know I just realized that you posted this under the "general" antiques discussion rather than in the Silver section. Just for future reference.</p><p><br /></p><p>In the meantime, this link will take you to the page of the 925 site with Henry Wilkinson and Son's mark for Sheffield Plate. One that same page you will see a link to "Introductory Text" which goes into great detail about the regulations that allowed the Sheffield Assay Office (and ONLY the Sheffield office) to register maker's marks for plated goods of this type.</p><p><br /></p><p>There is even a penalty for the use of any mark that was otherwise in use under the assay marking system, the implication being that doing so would damage the integrity of the system.</p><p><br /></p><p>Now, you will note in that chart of maker's marks that the Wilkinson crossed keys in shield was registered in 1836, which was 14 years after the London Assay Office replaced the crowned leopard with the uncrowned leopard as the City Mark. But I am not convinced that using a crowned leopard after 1822 would be kosher, but I would be willing to listen to AF on this subject if he happens to see this thread.</p><p><br /></p><p><a href="http://www.925-1000.com/silverplate__OSP10.html" target="_blank" class="externalLink ProxyLink" data-proxy-href="http://www.925-1000.com/silverplate__OSP10.html" rel="nofollow">http://www.925-1000.com/silverplate__OSP10.html</a></p><p><br /></p><p>You already know that you do not have a solid silver item and that the verdigris is often found where underlying copper has been exposed. But that also happens on damaged electroplated wares too, so in itself is not a guarantee that this is as old as it might appear. I would advise extreme caution before trying to "fix" this. Once the copper has been exposed, if it IS Sheffield Plate, there's nothing you can do at home to make this better on a permanent basis. Using polish to remove the greenies might make for a nicer picture, but it will just come back.</p><p><br /></p><p>You didn't make that gouge by the marks, did you?[/QUOTE]</p><p><br /></p>
[QUOTE="Bakersgma, post: 9047, member: 59"]You know I just realized that you posted this under the "general" antiques discussion rather than in the Silver section. Just for future reference. In the meantime, this link will take you to the page of the 925 site with Henry Wilkinson and Son's mark for Sheffield Plate. One that same page you will see a link to "Introductory Text" which goes into great detail about the regulations that allowed the Sheffield Assay Office (and ONLY the Sheffield office) to register maker's marks for plated goods of this type. There is even a penalty for the use of any mark that was otherwise in use under the assay marking system, the implication being that doing so would damage the integrity of the system. Now, you will note in that chart of maker's marks that the Wilkinson crossed keys in shield was registered in 1836, which was 14 years after the London Assay Office replaced the crowned leopard with the uncrowned leopard as the City Mark. But I am not convinced that using a crowned leopard after 1822 would be kosher, but I would be willing to listen to AF on this subject if he happens to see this thread. [url]http://www.925-1000.com/silverplate__OSP10.html[/url] You already know that you do not have a solid silver item and that the verdigris is often found where underlying copper has been exposed. But that also happens on damaged electroplated wares too, so in itself is not a guarantee that this is as old as it might appear. I would advise extreme caution before trying to "fix" this. Once the copper has been exposed, if it IS Sheffield Plate, there's nothing you can do at home to make this better on a permanent basis. Using polish to remove the greenies might make for a nicer picture, but it will just come back. You didn't make that gouge by the marks, did you?[/QUOTE]
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