Postumus, billon antoninianus, Trier or Cologne, IMP CM CASS [LAT
POSTIMVS PF AVG], radiate, draped, cuirassed bust r., Rev., SALVS
PR[OVINCIARVM], River god Rhine, horns on head, reclining l., resting on
urn, right hand on prow, holding anchor in left.
2.17g, diameter 2cm