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<p>[QUOTE=&quot;zumbly, post: 1933384, member: 57495&quot;]I came across some figures in a paper published in the Ohio Journal of Science that resulted from chemical analysis of the metal content of 12 antoniniani - four each of Trajan Decius (249-251 AD), Trebonianus Gallus (251-253 AD), and Valerian (253-260 AD) : </p><p><br /></p><p>Trajan Decius - average 35.4% silver (individual range - 21.52% to 42.21%)</p><p>Trebonianis Gallus - average 31.45% silver (individual range - 23.76% to 36.80%)</p><p>Valerian - average 17.95% silver (individual range - 17.95% to 24.44%)</p><p><br /></p><p>What&#039;s interesting is the fairly wide range in the silver content even within the individual short reigns of Decius and Gallus.&nbsp; In any case, the primary metal in all the examples was copper, in which case I wonder if one could properly call any of them a silver antoninanus. </p><p><br /></p><p>CNG&#039;s records of Postumus antoniniani show that they describe some of these as &quot;AR antoninianus&quot; and others as just &quot;antoninianus&quot;.&nbsp; I have a couple of Postumus antoniniani that look pretty nice and shiny, but at what can be not much more than 20% silver content at best, I don&#039;t know if I&#039;d call any of them a silver antoninianus.[/QUOTE]</p><p><br /></p>

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