Æ35 - Antoninus Pius L ΙΖ

Year 17 of Antoninus Pius's reign — the regnal year embedded in the Greek dating system used exclusively by the Alexandrian mint — corresponds to 153–154 AD, a period of notable administrative stability in Egypt under the prefect Marcus Sempronius Liberalis. Alexandria operated as a closed currency system: Roman imperial coinage did not circulate freely in Egypt, and provincials were required to exchange foreign coin at the border, making Alexandrian bronzes a deliberately isolated monetary population. The IV.4 reference places this within Dattari-Savio's exhaustive corpus of Alexandrian issues, the authoritative reckoning for this series.