Æ34 - Antoninus Pius L ΙΖ

Regnal year 17 of Antoninus Pius corresponds to 153–154 AD, the final year of his reign before the L IH (year 18) issues — placing this coin at the tail end of a remarkably stable provincial series. Alexandria's mint maintained continuous bronze production throughout his reign, unusual for a period when many eastern mints ran intermittently. The L ΙΖ designation is the Greek numeral dating system specific to the Alexandrian series, a practice that makes Egyptian provincial bronzes among the most precisely datable of all Roman provincial coinage.