Cross of Salem, a.k.a Pontifical cross. Has three bars, the upper two of which are shorter than, and equidistant from, the centre bar.
<a href="//commons.wikimedia.org/wiki/User:Amit6" title="User:Amit6">Amit6</a>
2010-11-16
<span class="int-own-work" lang="en">Own work</span>