Æ23 - Antoninus Pius L Κ

Year 20 of Antoninus Pius's reign — the regnal year encoded in the L Κ obverse inscription — fell during a period of relative administrative calm in Egypt, the province governed under a prefect answerable directly to Rome rather than the Senate. Alexandrian bronzes of this reign were produced in enormous volume to service Egypt's largely closed monetary economy, which rejected foreign coinage and required all currency entering the province to be exchanged for local issues at the Alexandria mint.