RTO, 'RESERVED TO OWNER' commonly seen around wied il-hlas (valley of birthing) and wied is-sweda (valley of the black female)
<a href="//commons.wikimedia.org/wiki/User:Pietru" title="User:Pietru">Pietru</a>
CC BY 3.0
<span class="int-own-work" lang="en">Own work</span>