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<p>[QUOTE=&quot;EWC3, post: 4461321, member: 93416&quot;]And I think the strictness comes out in their weight standards. The Umayyads seem to set two weight standards – equating to c. 3.12g for a bullion dirhem, c. 2.93g for a coin dirhem, taking 1/16th as seigniorage. The weight standard was rigorously maintained.</p><p><br /></p><p>But the greater strictness of the Almohads seems to extend to their coinage – as this coin is almost exactly by weight a half bullion dirhem – so without any seigniorage charge.</p><p><br /></p><p>Since Offa seems to have adopted Islamic weight standards in 792/3 – it follows that this coin should be a good attempt at a Troy pennyweight. Which of course it is. A lovely thing</p><p><br /></p><p>Rob T[/QUOTE]</p><p><br /></p>

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