<a href="https://en.wikipedia.org/wiki/Jerzy_Kosinski" class="extiw" title="en:Jerzy Kosinski">Jerzy Kosinski</a>'s signature, cropped from an image of this signed flyleaf from a copy of his book <i>Passion Play</i>:
<div class="thumb tright"><div class="thumbinner" style="width:146px;"><a href="//commons.wikimedia.org/wiki/File:Jerzy_Kozinski_signature.jpg" class="image"><img alt="Jerzy Kozinski signature.jpg" src="https://upload.wikimedia.org/wikipedia/commons/thumb/4/4d/Jerzy_Kozinski_signature.jpg/144px-Jerzy_Kozinski_signature.jpg" decoding="async" width="144" height="205" class="thumbimage" srcset="https://upload.wikimedia.org/wikipedia/commons/thumb/4/4d/Jerzy_Kozinski_signature.jpg/216px-Jerzy_Kozinski_signature.jpg 1.5x, https://upload.wikimedia.org/wikipedia/commons/thumb/4/4d/Jerzy_Kozinski_signature.jpg/288px-Jerzy_Kozinski_signature.jpg 2x" data-file-width="1872" data-file-height="2671"></a>  <div class="thumbcaption"><div class="magnify"><a href="//commons.wikimedia.org/wiki/File:Jerzy_Kozinski_signature.jpg" class="internal" title="Enlarge"></a></div></div></div></div>
<a href="//commons.wikimedia.org/wiki/User:UrielAcosta" title="User:UrielAcosta">Jay Dobkin</a>
CC BY-SA 4.0
<span class="int-own-work" lang="en">Own work</span>