Variant shape of the Cyrillic letter Ҫ ҫ.
<a href="//commons.wikimedia.org/wiki/User:%D0%9F%D0%B0%D0%BA%D0%BA%D0%BE" title="User:Пакко">User:Пакко</a>
<a href="//commons.wikimedia.org/wiki/File:Cyrillic_letter_Es_with_Descender.svg" title="File:Cyrillic letter Es with Descender.svg">File:Cyrillic letter Es with Descender.svg</a>, version of 20:47, 7 December 2011 by <a href="//commons.wikimedia.org/wiki/User:%D0%9F%D0%B0%D0%BA%D0%BA%D0%BE" title="User:Пакко">User:Пакко</a>