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<p>[QUOTE=&quot;Sallent, post: 2883399, member: 76194&quot;]It appears to be good silver because it&#039;s been cleaned and probably surface enrichment of silver has occured due to the cleaning process, with mild acid causing silver to migrate to the surface and form a silver rich layer, but I&#039;d be hesitant to call his coins good silver....but rather high silver content billon, containing roughly 20% silver.</p><p><br /></p><p>Here are two other silver rich billon coins of his, from early in his reign when he still controlled the silver mines in Iberia.</p><p><br /></p><p>[ATTACH=full]691468[/ATTACH] [ATTACH=full]691470[/ATTACH]</p><p><br /></p><p>One might have more surface silver enrichment than the other, appearing to be better silver, but they are no more than 20% silver each, despite any outward appearance due to enrichment. If I were you, I&#039;d change the AR in the label to Billon and make a note that it is silver rich billon.</p><p><br /></p><p>Note that later antoninianii of his also saw a silver decline, with the coinage from the end of his reign probably not more than 5 to 10% silver.[/QUOTE]</p><p><br /></p>

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