Æ33 - Trajan L ΙΘ

Year 19 of Trajan's reign corresponds to the period immediately following his Parthian campaign, when Egypt's administrative machinery was grinding out bronze at volume to service a province swollen with military logistics and supply traffic. The Alexandrian mint dated its bronzes by regnal year rather than Roman consular convention — a Ptolemaic habit that survived four centuries of Roman rule without interruption.