AR23 - Antoninus Pius L ΙΕ

Year 15 of Antoninus Pius's reign, which this coin's regnal date records, fell during one of the quieter stretches of Roman imperial administration — Antoninus famously never left Italy after taking power in 138 AD, governing the empire entirely from Rome. The Alexandria mint under his reign was prolific, producing an extraordinary range of reverse types tied to Egyptian religious calendars and Nile flood cycles. Billon by this period had drifted well below the silver content of earlier Ptolemaic or early imperial issues, reflecting a managed debasement that the Alexandrian economy absorbed with unusual stability.