Year 21 of Antoninus Pius's reign, which is what the regnal date ΚΑ records, fell during one of the most administratively settled periods in Roman imperial history — Antoninus never left Italy after becoming emperor, governing Egypt entirely through prefects. Alexandrian bronze coinage of this reign is notable for its extraordinary iconographic variety; the mint cycled through an unusually large number of reverse types year by year, making single-year issues relatively specific to date without epigraphic ambiguity. The IV.4 Dattari-Savio reference places this piece within a well-documented sequence.
Year 21 of Antoninus Pius's reign, which is what the regnal date ΚΑ records, fell during one of the most administratively settled periods in Roman imperial history — Antoninus never left Italy after becoming emperor, governing Egypt entirely through prefects. Alexandrian bronze coinage of this reign is notable for its extraordinary iconographic variety; the mint cycled through an unusually large number of reverse types year by year, making single-year issues relatively specific to date without epigraphic ambiguity. The IV.4 Dattari-Savio reference places this piece within a well-documented sequence.