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<p>[QUOTE=&quot;BenSi, post: 3947002, member: 95174&quot;]For the Hyperpyron, no, here is a very long study written by E Lianta .</p><p><br /></p><p><a href="https://www.academia.edu/35195487/John_II_Comnenus_1118-43_or_John_III_Vatatzes_1222-54_Distinguishing_the_Hyperpyra_of_John_II_from_those_of_John_III_.pdf" target="_blank" class="externalLink ProxyLink" data-proxy-href="https://www.academia.edu/35195487/John_II_Comnenus_1118-43_or_John_III_Vatatzes_1222-54_Distinguishing_the_Hyperpyra_of_John_II_from_those_of_John_III_.pdf" rel="nofollow">https://www.academia.edu/35195487/John_II_Comnenus_1118-43_or_John_III_Vatatzes_1222-54_Distinguishing_the_Hyperpyra_of_John_II_from_those_of_John_III_.pdf</a></p><p><br /></p><p>Basically her conclusion was the only way to differentiate the two was the purity of the gold. </p><p><br /></p><p>I could test it when I get it but I think I will just consider it a John II.</p><p><br /></p><p>No dealer I know of has tested them and John III has been getting very good prices these days. I bought an issue blatantly from Constantinople sold to me as a John III, that is easy to differentiate because of the flans. The Thessalonica issues are thicker flan, smaller. </p><p>We do not know why John III decided to copy John II, we are not even certain where the gold came from for his coins but he was the first in decades to mint gold coinage again. </p><p><br /></p><p>Here is a much shorter article that goes directly to the point about metal content. It is by Donald Squires and it has to do with attributing an unpublished variation to John III but get to the second page, it deals heavily on the metal analysis. </p><p><br /></p><p><a href="https://www.academia.edu/36320560/Unpublished_Transitional_Hyperpyra_of_John_III_Vatatzes" target="_blank" class="externalLink ProxyLink" data-proxy-href="https://www.academia.edu/36320560/Unpublished_Transitional_Hyperpyra_of_John_III_Vatatzes" rel="nofollow">https://www.academia.edu/36320560/Unpublished_Transitional_Hyperpyra_of_John_III_Vatatzes</a>[/QUOTE]</p><p><br /></p>

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