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<p>[QUOTE=&quot;zumbly, post: 1873207, member: 57495&quot;]They really just got smaller and lighter.</p><p><br /></p><p>Here is Andrew McCabe&#039;s notes for this coin : &quot;A heavy staff Semis, weighing 24.5 grams on a large flan, the size of an As; this is probably associated with the post-semilibral coinage, struck in the earliest campaigns in Etruria.&quot;</p><p><br /></p><p>By this time (208 BC) the typical as would have weighed no more than 41g.&nbsp; </p><p><br /></p><p>From the wiki entry on the libral standard :</p><p><br /></p><p>&quot;The libral standard began with the era of the aes grave (heavy bronze) coinage in Rome, circa 450 BC, where one as weighed one Roman pound (libra), or twelve Roman ounces (unciae). The libral standard began with the era of the aes grave (heavy bronze) coinage in Rome, circa 450 BC, where one as weighed one Roman pound (libra), or twelve Roman ounces (unciae). This changed when the weight of the aes grave was decreased to approximately 10 unciae (the &quot;light libral standard&quot;) circa 270 BC, remaining at that level until 225 BC. It then suddenly fell to 5 unciae (the &quot;semi-libral standard&quot;) around the start of the second Punic war in 218 BC, before finally falling to 1.5 - 1 unciae around 211 BC&quot;</p><p><br /></p><p>I&#039;m not sure how accurate the above info from wiki is, but if we follow that, then : </p><p><br /></p><p>Libral standard 450 BC - 270 BC : 1 as ~ 12 unciae (328.9g)</p><p>Light libral standard 270 BC - 225 BC : 1 as ~ 10 unciae (274g)</p><p>Semi-libral standard 225 BC - 211 BC : 1 as ~ 5 unciae (137g)</p><p>After 211 BC : 1 as ~ 1.5 - 1 unciae (41.1g - 27.4g) </p><p><br /></p><p>After 211 BC, the weight of the as woud continue to decline with the introduction of the sextanal standard and the triental standard.[/QUOTE]</p><p><br /></p>

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