Æ33 - Antoninus Pius L ΚΑ

Year 21 of Antoninus Pius's reign, which this coin's regnal date records, fell during one of the most administratively stable periods Roman Egypt had seen in generations. Alexandria's mint operated under tight imperial oversight, with regnal year dating serving as a bureaucratic tool that also makes die-linking studies across this reign unusually tractable. The specific obverse and reverse pairing catalogued under Dattari-Savio 2006 is well enough documented that specimens turning up outside known collections can be placed with confidence.