Aureus

Aureus, see also for details under wds7. To commemorate the victories
of his generals in Germany and Brittannia, Claudius converted
arches of an aqueduct, the Aqua Virgo in regio VII, into monumental
triumphal arches. In 51 or 52 an arch of the Aqua Virgo was
converted into a triumphal arch to celebrate the victories in
Britain. It is also situated in regio VII at the point were the
aqueduct crossed the Via Flaminia, the main road to the north.
(Hill1989). Note: not all numismatists are convinced that the
above is a correct interpretation.