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<p>[QUOTE=&quot;BenSi, post: 3243130, member: 95174&quot;]Not proven but surmised. We have no translated words to prove it.&nbsp; The billion Tetartera was valued higher than the regional one, that is because letters written mentioned the buying power of the coin&nbsp; in Constantinople and another letter with the buying power in Thessalonica, they were considerable different. To complicate matters they had the same name. In fact Before the coin reform of 1092 two other coins also had the same name, one of gold and another of silver.</p><p>&nbsp;</p><p>The Metropolitan ( Constantinople) tetarteron of 1092 had silver in it From 4% ( Alexius I/ John II) down to 1% ( During the reign of Isaac II 1185-95 AD). Under the table you were looking at it was the equivalent of one Old Follis.&nbsp; They were worth 288 to the Hyperpyron ( Highest value gold.) The regional tetarteron was 864 to the Hyperpyron. </p><p><br /></p><p>Now the problem with this is the lack of consistency with regional tetartera, I have issues made under Alexius the same coin but weights running from 1.3gm to 6gm , how were they counted? Same problem under John II ( His son.) Then under Manuel it gets clearer but still some issues. In some documents , they called the smaller coins obols , but those documents were written after the time period. </p><p><br /></p><p>The most interesting problem with these coins is the trachy and the tetarteron did not cocirculate, the regional tetartera was used in Greece and the trachy was used in Asia Minor and in Bulgaria, the only place All of the denominations circulated together was in the city of Constantinople.&nbsp; The trachea was valued higher than the tetarteron so how did people pay for smaller valued items? </p><p><br /></p><p>Lots of unknowns here. </p><p><br /></p><p>I agree with you attributions, nice condition especially for the half tetartera @<a href="https://www.cointalk.com/members/marsyas-mike.85693/" class="internalLink ProxyLink" data-proxy-href="https://www.cointalk.com/members/marsyas-mike.85693/">Marsyas Mike</a>[/QUOTE]</p><p><br /></p>

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