Antique Japanese (samurai) <i>abumi</i>. Stirrups with a family mark <i>mon</i>.
<a href="//commons.wikimedia.org/wiki/User:Samuraiantiqueworld" class="mw-redirect" title="User:Samuraiantiqueworld">Samuraiantiqueworld</a>
CC BY-SA 3.0
<span class="int-own-work" lang="en">Own work</span>