Postumus AE Dupondius. 262 AD. 

IMP CM CASS LAT POSTVMVS PF AVG, radiate & draped bust 
right
NEPTVNO REDVCI, Neptune	standing left, holding dolphin 
and trident, chlamys over left shoulder, prow at foot. 

RIC 214; Cohen 210, rated scarce.

Contributed by Dane for George Clegg (biggyg2), June 2009