Commemorative Medal of the Rhine Confederation.
<a href="https://en.wikipedia.org/wiki/Vivant_Denon" class="extiw" title="en:Vivant Denon">Von D. V. Denon</a>
<a class="external autonumber" href="https://upload.wikimedia.org/wikipedia/commons/a/a7/Medaille_rheinbund_472.jpg">[1]</a>