Year 7 of Antoninus Pius's reign — regnal year Λ Ζ in Alexandrian dating — falls squarely within the most stable decade of the entire Principate. Egypt remained a closed monetary system under Roman rule: coins struck at Alexandria could not legally circulate outside the province, and foreign coinage entering Egypt was exchanged at the border. This isolation is precisely why Alexandrian bronzes survived in such quantities; they never left.
The reference IV.4#669 places this piece within Dattari-Savio's revised corpus, the standard for this series.
Year 7 of Antoninus Pius's reign — regnal year Λ Ζ in Alexandrian dating — falls squarely within the most stable decade of the entire Principate. Egypt remained a closed monetary system under Roman rule: coins struck at Alexandria could not legally circulate outside the province, and foreign coinage entering Egypt was exchanged at the border. This isolation is precisely why Alexandrian bronzes survived in such quantities; they never left.
The reference IV.4#669 places this piece within Dattari-Savio's revised corpus, the standard for this series.