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<p>[QUOTE=&quot;cmezner, post: 8118021, member: 87809&quot;]The problem with trachys was producing two dies with the exact same curve shape. If the obverse was more convex than the reverse was concave, the center of the design would be poorly transferred. If the obverse was less convex than the reverse was concave, the centers cold be clear but the edges would be weak. In order to produce a well struck scyphate it is necessary that both obverse and reverse dies have the same radius of curvature in order to match exactly. </p><p>Quoted from&nbsp; <a href="https://community.vcoins.com/celator-vol-12-no-06/" target="_blank" class="externalLink ProxyLink" data-proxy-href="https://community.vcoins.com/celator-vol-12-no-06/" rel="nofollow">https://community.vcoins.com/celator-vol-12-no-06/</a></p><p><br /></p><p><br /></p><p>My Isaacus II Angelus Electrum Aspron Trachy, First reign</p><p>Constantinople, 12 Sep 1185 - 8 Apr 1195 AD</p><p>4.121g </p><p>Sear 2002; Sommer 65.4.3; DOC 2a; Ratto 2178-2179; BMC/B.12 </p><p><br /></p><p>Ob.: MP-ΘV, the Virgin enthroned facing, nimbate, wears pallium and maphorium, holding nimbate head of infant Christ</p><p>Rev.: ICAAKIOC ∆, Θ (between heads), X/AP/X/M (on r.), Archangel Michael, standing nimbate on right in military attire, scepter in left, crowing Isaac with right; Isaac standing on left wearing divitsion and chlamys; cruciform scepter in left, akakia in right</p><p><br /></p><p>[ATTACH=full]1413094[/ATTACH]&nbsp; [ATTACH=full]1413095[/ATTACH][/QUOTE]</p><p><br /></p>

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