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<p>[QUOTE=&quot;mrbrklyn, post: 1442013, member: 4381&quot;]<a href="http://www.numismaster.com/ta/numis/Article.jsp?ad=article&amp;ArticleId=25220" target="_blank" class="externalLink ProxyLink" data-proxy-href="http://www.numismaster.com/ta/numis/Article.jsp?ad=article&amp;ArticleId=25220" rel="nofollow">http://www.numismaster.com/ta/numis/Article.jsp?ad=article&amp;ArticleId=25220</a></p><p><br /></p><p>That is the historical significance of the design on the French 10 and 20 franc coins of 1973?</p><p><br /></p><p>The three figures – Hercules, Liberty and Equality – follow the Dupre sculpture of the French Revolutionary period.</p><p><br /></p><p><br /></p><p><br /></p><p>Please explain the difference between an essai, a piefort and a proba.</p><p><br /></p><p>An essai, or essay, is a trial strike of a design, made to test the dies. It may be in a different metal and a different thickness than the normal coin and may also be considered to be a proof coin or a pattern. A piefort, or piedfort, is an exact double-thickness, double-weight coin struck with the normal dies. They may also be quadruple-thickness on rare occasions. Usually they are the same metal as the normal coin but may be struck in other metals. Proba is a term used on Polish coins to indicate a trial strike, usually in proof. These are often struck in fairly large quantities. It is similar to the German “probe,” which means test or trial.[/QUOTE]</p><p><br /></p>

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