<a href="//commons.wikimedia.org/wiki/Museo_Archeologico_di_Milano" class="mw-redirect" title="Museo Archeologico di Milano">Archaeological Museum in Milan</a>, (Italy). Matrix to create pottery oil lamps, decorated with the Christians ymbol of the Chi-rho, dating from after the 4th century AD. Picture by <a href="//commons.wikimedia.org/wiki/User:G.dallorto" title="User:G.dallorto">Giovanni Dall'Orto</a>, March 13 2012.
<a href="//commons.wikimedia.org/wiki/User:G.dallorto" title="User:G.dallorto">Giovanni Dall'Orto</a>
Attribution
<span class="int-own-work" lang="en">Own work</span>