Æ33 - Antoninus Pius L ΙΕ

Regnal year 15 of Antoninus Pius corresponds to 151–152 AD, a period of studied calm in Roman Egypt. Alexandria's mint operated on an entirely separate reckoning from Rome, dating issues by the emperor's regnal year rather than consular year, which makes precise attribution straightforward but also highlights how administratively distinct the province remained. The Alexandrian bronze series ran largely uninterrupted through Antoninus's exceptionally long reign — 23 years — producing a volume of dated annual types that now serve as one of the better-anchored chronological sequences in all of provincial numismatics.