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<p>[QUOTE=&quot;chrisild, post: 2246813, member: 39&quot;]The thaler coins based on the 1837 Dresden Convention (later &quot;succeeded&quot; by the 1857 Vienna Convention) had a fine weight of 1 Cologne Mark, i.e. ~233.85 g. That would be 7 Doppelthaler. Not sure about the size variations; I do not collect such pieces. But I know that the Doppelthaler was not popular due to its size and value - it was colloquially called Champagne Thaler as you could hardly use it for everyday transactions. <img src="styles/default/xenforo/clear.png" class="mceSmilieSprite mceSmilie2" alt=";)" unselectable="on" unselectable="on" /></p><p><br /></p><p>Edit - Only the first one actually says &quot;Vereinsmünze&quot; (Convention Coin); the other two apparently are what is called Geschichts-Doppeltaler (History Double Thalers). Here are three examples, all with the same raw and fine weight (37.12 and 33.41 g) but different diameters:</p><p><br /></p><p><a href="https://www.hdbg.eu/koenigreich/web/index.php/objekte/index/id/654" target="_blank" class="externalLink ProxyLink" data-proxy-href="https://www.hdbg.eu/koenigreich/web/index.php/objekte/index/id/654" rel="nofollow">https://www.hdbg.eu/koenigreich/web/index.php/objekte/index/id/654</a></p><p>41 mm</p><p><a href="http://www.heubach-edelmetalle.de/content/altdeutschland-bayern-ludwig-geschichtsdoppeltaler-1842" target="_blank" class="externalLink ProxyLink" data-proxy-href="http://www.heubach-edelmetalle.de/content/altdeutschland-bayern-ludwig-geschichtsdoppeltaler-1842" rel="nofollow">http://www.heubach-edelmetalle.de/content/altdeutschland-bayern-ludwig-geschichtsdoppeltaler-1842</a></p><p>40 mm</p><p><a href="https://www.hdbg.eu/koenigreich/web/index.php/objekte/index/id/652" target="_blank" class="externalLink ProxyLink" data-proxy-href="https://www.hdbg.eu/koenigreich/web/index.php/objekte/index/id/652" rel="nofollow">https://www.hdbg.eu/koenigreich/web/index.php/objekte/index/id/652</a></p><p>38 mm</p><p><br /></p><p>Christian[/QUOTE]</p><p><br /></p>

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