Æ34 - Antoninus Pius L ΕΝΑΤΟΥ

The regnal year designation L ΕΝΑΤΟΥ — Year Nine of Antoninus Pius — places this issue squarely in 145/146 AD, the same year Antoninus celebrated the 900th anniversary of Rome's traditional founding date. Alexandria's mint responded to this occasion with a notably active bronze production run, and the Alexandrian dating system, which reset with each emperor's accession, provides one of the more reliable chronological anchors in all of provincial numismatics.

Egypt's coinage remained administratively closed — foreign coins could not legally circulate within the province — a Ptolemaic-era monetary policy the Romans kept intact for fiscal control of grain revenues.