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<p>[QUOTE=&quot;GDJMSP, post: 682478, member: 112&quot;]It used to be that silver was accounted for by the Castillian marc, or 3550 1/2 Troy grains. Each marc was 8 ounces. And when coins were issued, the mints were directed to issue so many coins per marc. The fineness of the silver was determined by that. And it could vary from time to time depending on Royal Decree.</p><p><br /></p><p>But when dineros is used, it refers to the fineness of the silver. The fineness of silver is determined by breaking it into 12 dineros of 24 granos (grains) each.&nbsp; </p><p><br /></p><p>The Spaniards used to weigh gold and silver differently. A marc of gold for example had 4800 grains, while a marc of silver had 4608 grains. But in Troy weight a marc only had 3550 1/2 grains.</p><p><br /></p><p>To us it is a confusing system, but it worked for them. It is also worth noting that the universal measure of weight, the marc, varied greatly depending on which country you were in at the time.</p><p><br /></p><p>The grade of that coin I would put at AG.[/QUOTE]</p><p><br /></p>

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