Æ33 - Antoninus Pius L ΙΘ

Year 19 of Antoninus Pius's reign, which is what the L ΙΘ date signifies — Alexandria dated its provincial bronze by regnal year rather than by Roman consular convention, a bookkeeping habit inherited from Ptolemaic administrative practice that survived well into the third century. This issue belongs to the densest period of Alexandrian civic bronze production under Pius, whose reign generated an unusually systematic annual coinage that modern scholars have used as a chronological anchor for the entire provincial series.