Heraldic imperial crown of Napoleon III
<ul><li><i>Late heralic crown design of the First French Empire widespread during the Second French Empire</i></li></ul>
of this vector depiction:<a href="//commons.wikimedia.org/wiki/User:David_Liuzzo" title="User:David Liuzzo">David Liuzzo</a>.
Attribution
<p>Drawn using <a href="//commons.wikimedia.org/wiki/File:Coat_of_Arms_Second_French_Empire_(1852%E2%80%931870).svg" title="File:Coat of Arms Second French Empire (1852–1870).svg">File:Coat of Arms Second French Empire (1852–1870).svg</a> 
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<ul><li><a rel="nofollow" class="external text" href="http://gallica.bnf.fr/ark:/12148/btv1b8413215d/f1.zoom">Charles Normand, <i>Armes et sceau de l'Empire français</i>, Paris, 1804</a></li>
<li>Reconstructed crown of Jürgen Abeler depicted in his book "Kronen. Herrschaftszeichen der Welt. Wuppertal 1976" as reference.</li></ul>