Year 8 of Antoninus Pius's reign — 144/145 AD — places this issue squarely in the most administratively stable decade of the entire second century. Alexandria's municipal mint operated under Roman prefectural oversight, producing bronze drachms and fractions for purely local Egyptian circulation; they were not legal tender elsewhere in the empire. The regnal year dating system, a holdover from Ptolemaic practice, was maintained by Rome specifically for Egypt and applied to no other province.
Year 8 of Antoninus Pius's reign — 144/145 AD — places this issue squarely in the most administratively stable decade of the entire second century. Alexandria's municipal mint operated under Roman prefectural oversight, producing bronze drachms and fractions for purely local Egyptian circulation; they were not legal tender elsewhere in the empire. The regnal year dating system, a holdover from Ptolemaic practice, was maintained by Rome specifically for Egypt and applied to no other province.