Æ13 - Antoninus Pius L ΚΔ

Year 24 of Antoninus Pius corresponds to 160–161 AD, the emperor's final regnal year — he died in March 161, making coins dated L ΚΔ among the last struck in his name at Alexandria before the mint retooled for Marcus Aurelius and Lucius Verus. The Alexandria mint operated on the Egyptian calendar, so output was tied to the Nile flood cycle and local administrative rhythms rather than the Roman fiscal year.

At 1.37g and 13mm, this is a notably small flan even within the debased Alexandrian bronze series, which had been shrinking incrementally since the reign of Hadrian.