Valerian and Gallienus, AE27 of Nicaea, Bithynia. AD 253-260. 

AYT OYALERIANOC GALLIHNOC CEB, confronting, radiate, 
draped and cuirassed busts of Valerian I and Gallienus.
OI KTICTAI NIKAIEWN, Artemis standing right, wearing modius 
and holding bow; clasping the hand of Dionysus, standing 
left before her, holding thyrsos; panther at foot.

RecGen 819; BMC 147.

With permission of Roma Numismatics E-Sale 36, Lot 276, May 2017.

NOTE: Isegrim gives RecGen 189 in error.