Herakles - GALLIENUS Serpent Rises from Altar Gallienus Emperor, A.D. 253-268 AE Antoninianus. 2.804 grams. Mint of Siscia. Obverse: His radiate head r. Reverse: Salus standing l., holding sceptre and feeding serpent rising from altar. Reference: RIC 182, 581. Cohen 934. Very Fine+ Herakles Numismatics, Inc.