Commodus, AE21 of Cassandrea, Macedonia, 161-180 AD.

Obv: IM L AVR COM, youthful, bare-headed, draped and
cuirassed bust right.
Rev: COL IVL AVG CAS, Poseidon, naked, standing facing, head left, 
holding dolphin and trident.

Mionnet Supp. III, 361; Varbanov 3354

from an orphaned folder, Jan. 2011