<a href="https://en.wikipedia.org/wiki/ambigram" class="extiw" title="en:ambigram">Ambigram</a> <b>Chump</b> by Mitchell T. Lavin, published in <a href="https://en.wikipedia.org/wiki/The_Strand_Magazine" class="extiw" title="en:The Strand Magazine"><i>The Strand Magazine</i></a>, edition of June 1908. 180° rotational symmetry. Text says : "<i>ARE THERE OTHERS! As you will notice, the slang word « chump », if written in the manner here shown, reads the same even when held upside down. I think it is the only word in the English language which has this peculiarity, and therefore hope you will consider it worthy of insertion in your « Curiosities » column. - Mr. Mitchell T. Lavin, 931, West Ninth Street, Cincinnati, Ohio, U.S.A.</i>"
Mitchell T. Lavin
<a rel="nofollow" class="external text" href="https://books.google.la/books?ei=lwlNUPf4OYrf0gGni4CgAg&amp;redir_esc=y&amp;id=45MkAQAAIAAJ&amp;dq=strand+%22are+there+others%22&amp;pg=PA117&amp;lpg=PA117&amp;sig=ACfU3U0GzAnMaawdRxa0DrNzH8YGp15FJQ&amp;focus=searchwithinvolume&amp;q=strand+are+there+others+chump">The Strand Magazine 1908, Volume 36, page 117</a>