Andy Warhol's autograph.
Andy Warhol
Own work based on: <a href="//commons.wikimedia.org/wiki/File:Warhol_autograph.jpg" title="File:Warhol autograph.jpg">Warhol autograph.jpg</a>  and <a href="//commons.wikimedia.org/w/index.php?title=File:G&amp;action=edit&amp;redlink=1" class="new" title="File:G (page does not exist)">G</a>