Translation of legend abbreviations:
M(APKOC) AVPHΛIC KAICAP
Marcus Aurelius Caesar
LIE
regnal year 15
EGYPT, Alexandria. Marcus Aurelius
year 15, CE 151/2
AE obol, 20.5 mm, 6.0 gm
Obv: MAVPHΛICKAICAP; bust right, bare head
Rev: Sphinx crouched right; LIE (date) above in left field
Ref: Emmett 1919.15, R5; Dattari 3221; RPC IV online 15684