Æ33 - Antoninus Pius L ΙΕ

Regnal year 15 of Antoninus Pius corresponds to 151–152 AD, a moment of administrative stability in Roman Egypt that produced unusually high-volume bronze issues from the Alexandria mint. The Alexandrian coinage system operated independently of the Roman imperial mint, denominated in drachms and fractions on a reduced Egyptian standard, and was legally non-exportable — a deliberate monetary quarantine Rome maintained over the province to control its grain revenues.