Alexander Hamilton's signature.
<a href="//commons.wikimedia.org/wiki/User:Connormah" title="User:Connormah">Connormah</a>, Alexander Hamilton
Own work by uploader, traced in Adobe Illustrator from <a rel="nofollow" class="external free" href="http://www.handwriting.org/images/samples/ahamiltn.gif">http://www.handwriting.org/images/samples/ahamiltn.gif</a>