Here's a copy of the famous eyewitness portrait of
שבתי צבי, "Sabetha Sebi", included in Thomas Coenen's 1669 book
Ydele verwachtinge der Joden getoont in den persoon van Sabethai Zevi. The copy of that portrait, depicted below, is in the 1728 book
Les Imposteurs Insignes by Jean-Baptiste de Rocoles.:

The original can be seen
here.